How _________ your summer holiday? (    )

A．was

B．are

C．were

改错：I was fat. But now I is thin. （_____）改为__________
A B   C

用括号里单词的适当形式填空
1. When I am ________ (do) my homework, my mother is ________ (cook).
2. He has to _________ (travel) the country in search of work.
3. How __________ (do) seeds travel?
Seeds _________ (travel) in many ways.
4. What _____ (be) they talking about?
They are _________ (talk) about the seeds of plants.

________ it in March? (  )

A．Am

B．Is

C．Are

He ___ at home yesterday. （   ）

A．wasn’t

B．weren’t