Если можно, то с кратким разъяснением к ответу! Заранее спасибо!1. Fill

Если можно, то с коротким изъяснением к ответу! Заранее спасибо!

1. Fill in the gap.
Look! Our dog ____ playing with a ball!
A) be
B) am
C) is
D) are

2. Fill in the gaps if necessary.
___ Canada is bigger than ____ United States of America.
A) ___, the
B) ___, ___
C) the, ___
D) the, the

3. Choose the correct definition of the word.
discovery
A) the act or process of knowing or learning smth
B) the surroundings in which a person or an animal lives
C) reduce in price (make it smaller)
D) a thing used to protect or to conceal smth

4. Fill in the gap.
I feel _____ watching film with you.
A) ___
B) like
C) as
D) to

5. Fill the gaps with the correct modal verbs.
You ______ do as your mum tells you. She knows better.
A) can
B) may
C) must
D) need

6. Fill in the gaps
If I _____ you I ____________ her back.
A) am, will call
B) were, would call
C) had been, would have called
D) were, would have called

7. Choose the right form of the verb.
The book ___________ by one of the greatest writers of the 20th century.
A) wrote
B) had written
C) was written
D) was writing

8. Fill in the gaps.
Jimmy was a very ________________ boy and had a lot of friends all over the town.
A) communicate
B) communication
C) communicative
D) communicating