They have collected more than 14,000 books since the library_____ last month.( )
A.builtB.was builtC.buildsD.is built
He wants to know tomorrow.( )
A.if it rainsB.if it will rain
C.whether will it rainD.if will it rain
When we heard the good news, we couldn't help . We were so excited.( )
A.jumpB.to jumpC.jumpingD.jumped
Cars, buses and bikes stop when traffic lights change to red.( )
A.mayB.needC.canD.must
These machines cut grass.( )
A.are used to.B.use to
C.are used forD.use for
Do you know the boy is drawing a picture over there?( )
A.whomB.whatC.whoseD.who