( )1.— _____ does your mother usually go to the office?
—By bus.
A.When B.What C.How
( )2.— _____
—I’m looking for my wallet.
A.Can I help you? B.What’s he doing? D.What’s in the wallet?
( )3.He is new here, so he has_____friends.
A.few B. little C. a few
( )4.Look! The students _____ the classroom. .
A.clean B. cleaning C. are cleaning