— Whose wallet is this? Is it Betty’s?
— It ________be hers. Don’t you remember she even didn’t come to our party?
A.must B.can’t C.might D.needn’t
Let’s wait for Tony and Daming. They are always at the back of the group and are walking ________ than us.
A.faster B.fastest C.more slowly D.most slowly
Before you buy something new, think whether it is really________ because maybe the old one is just as good.
A.necessary B.patient C.nervous D.crowded
His father thinks it is a shame that Tony does not________ his homework to be more important.
A.describe B.consider C.produce D.appear
Pandas do not have many babies, and baby pandas often die. The ________ is getting very difficult.
A.discussion B.tradition C.conversation D.situation
Some people do not have time to wash ________ pets ________, so they pay someone to do it at the pet shop.
A.them; their B.their; them C.their; themselves D.them; themselves
