圈出合适的单词补全句子。
1.  your father here today?
2. My teacher often  to other countries.
3. Mr Liu is a .
4. She here today.
5. ---What does Mrs White do?
---She is a   .

选词填空。
am   is   are
【小题1】Mom: ______ Sam doing his homework?
Amy: No, he isn’t.
【小题2】Mom: Are you tidying your room now?
Sam: Yes, I ______.
【小题3】Mom: Sam, what ______ you doing?
Sam: It’s a secret.
【小题4】Mom: ______ you drawing a picture, Amy?
Amy: No, I am not.

He____ going to play football. (   )

A．are

B．is

C．was

There _________ a book on the desk. (   )

A．is

B．are

C．am