I___________ frustrated when I wasn’t sure of the correct answer.
| A．may be | B．used to |
| C．used to be | D．use to be |
There __________ some children in the painting room. They are studying painting.
| A．is | B．are | C．am | D．was |
The geography teacher told us the earth________ bigger than the moon.
| A．is | B．was | C．isn’t | D．wasn’t |
I can’t find the bookstore _____ my father bought the book for me yesterday.
| A．who | B．which | C．when | D．where |
Alice ________ to see his aunt if she _______free tomorrow.
| A．will come; will be | B．come ; is |
| C．will come ;is | D．comes ;will be |
The journey takes _____ .
A. half an hour B.an hour half C.a half hour