Возле стола появилась оса, и мы сразу убрали сладкий сок.

Because возле requires the genitive case.

• стол = nominative, table
• стола = genitive, of the table

So:

• возле стола = near the table

This is just a standard case pattern you need to memorize:

• у дома = by the house
• около окна = near the window
• возле стола = near the table

In the past tense, Russian verbs agree with the subject in gender and number.

The subject here is оса (wasp), which is a feminine singular noun. So the verb must also be feminine singular:

• появился = masculine
• появилась = feminine
• появилось = neuter
• появились = plural

So оса появилась means the wasp appeared.

Russian word order is much more flexible than English word order. Starting with Возле стола helps set the scene first:

• Возле стола появилась оса = Near the table, a wasp appeared

This sounds natural in Russian because speakers often put the location or context first, and then introduce what happened there.

A more neutral order is also possible:

• Оса появилась возле стола

Both are grammatical, but the original version feels a bit more like setting the scene before introducing the wasp.

Появилась comes from появиться, which means to appear, to show up, or to come into view.

So it is not just saying that the wasp was near the table. It means that it showed up there or suddenly appeared there.

That is why появилась works well here: it describes the wasp’s arrival into the scene.

This is a question of aspect.

• убрать → perfective
• убирать → imperfective

Убрали is perfective past, so it presents the action as completed:

• мы сразу убрали сладкий сок = we immediately put away / removed the sweet juice

This fits the situation well: the wasp appeared, and then the speakers took one completed action in response.

If you said убирали, it would sound more like an ongoing or repeated process, which is less natural here.

It is in the accusative, but for inanimate masculine singular nouns, the accusative looks exactly like the nominative.

So:

• nominative: сладкий сок
• accusative: сладкий сок

That is why the form does not visibly change.

Compare with a feminine noun, where you would see the change more clearly:

• сладкая вода = nominative
• убрали сладкую воду = accusative

So in your sentence, сок is the direct object, and it is in the accusative, even though it looks unchanged.

Сразу means immediately, right away, or at once.

In this sentence:

• мы сразу убрали сладкий сок
• we immediately put away the sweet juice

Its position is natural because it modifies the whole action убрали.

Russian adverbs like сразу are fairly flexible in position, but this placement is very common and natural.

Yes. In Russian, the subject does not always have to come before the verb.

In:

• Возле стола появилась оса

the subject is оса, and the verb is появилась.

Russian often places the subject after the verb when introducing something new into the scene. This is especially common with verbs like:

• появиться = to appear
• прийти = to arrive
• лежать = to lie
• стоять = to stand

So the structure is completely normal.

И means and, and it links the two parts of the sentence:

• Возле стола появилась оса
• и мы сразу убрали сладкий сок

Without и, the connection between the two actions would feel less smooth. The sentence is describing a sequence:

1. A wasp appeared near the table.
2. As a result, we immediately removed the sweet juice.

So и works naturally as a simple connector between the two events.

Russian has no articles, so there is no direct equivalent of a or the.

That means:

• оса can mean a wasp or the wasp
• стола can mean of a table or of the table
• сок can mean juice, a juice, or the juice

The exact meaning depends on context.

In this sentence, English naturally uses:

• a wasp appeared
• near the table
• we removed the sweet juice

But Russian leaves that distinction to context instead of using articles.