What were you doing ______ I knocked at the door?
I was sleeping.( )
A.unlessB.onceC.whenD.while
Mary invited Tom and Ann to dinner,but____of them came.( )
neither
both
either
none
The car____my uncle had just bought was destroyed in the earthquake.( )
whose
whom
who
which
I don't know when he___,if he ____here,I'll call you at once.( )
A.will come;arrives
B.will come;will arrive
C.comes;arrives
D.comes;will arrive
Many city people their bikes to work every day.( )
A.rideB.will ride
C.rodeD.have ridden
Summy ate nothing for breakfast this morning,____?
No,because she had a stomachache.( )
isn't she
was she
didn't she
did she