Ответ:

• A: Where 1) .was.... Vlad last night?  

  B: He 2) was..... at home.

A: 3) Was.... Vasily with him?

B: No, he 4) wasn't...... He and Kelly

5) .were.... at the theatre.

• A: 6) Were..... you at the gym yesterday

afternoon?

B: No, we 7) .weren't..... We 8).were.... at the zoo.

A: Where 9) .were.... you?

B: I 10) .was..... at the library.

Ответ:

was - ед. число утверждение (he, she, it, I)

He/she/it was at home yesterday - он/она/оно был дома вчера

were - мн. число (we, you даже если you - в единственном, they)

We/you/they were at home yesterday - Мы, ты, Вы, Они был(и) дома вчера.

was not и were not  - отрицание, употребление такое же:

was not - ед. число отрицание (he, she, it, I)

He/she/it was not at home yesterday - он/она/оно не был(а/о) дома вчера

were not - мн. число (we, you даже если you - в единственном, they)

We/you/they were not at home yesterday - Мы, ты, Вы, Они не был(и) дома вчера.

1) - was

2) was

3) Was

4) was not

5) were

6) Were

7) were not

8) were

9) were

10) was (если стоит I)