-________are they going swimming?-Tomorrow.
| A．What | B．Where | C．When | D．Why |
If you don’t know how to spell new words, _________ in a dictionary.
| A．look them up | B．look up them | C．look them after | D．look them for |
---Whose book is this?
---It________ be Ning’s because it has her name on it.
| A．must | B．can’t | C．might | D．could |
There are ______________ birds there in the sky.
| A．Million of | B．five millions of | C．millions of | D．five millions |
I think teenagers ____________ to choose their own clothes.
| A．be allowing | B．should be allowed | C．be allowed | D．should allowed |
---Lucy _________ really quiet but now she is very outgoing.
---Yes. She has changed a lot.
| A．use to be | B．used to | C．used to be | D．be used to be |