—I don’t know________．
—Because he has to look after his mother．
A．why he is leaving
B．why is he leaving
C．whether he is leaving
D．whether is he leaving
The teacher told us a piece of bad news．When we heard of the news，we were all________silence．
A．for B．in
C．with D．by
It’s raining________．Don’t go out without an umbrella．
A．heavy B．heavily
C．strong D．strongly
I called you several times．but you didn’t________．
A．take up B．look up
C．pick up D．stay up
The campers were so tired that they________asleep soon．
A．dropped B．drop
C．fell D．fall
I________my clothes when the phone rang．
A．wash B．washed
C．am washing D．was washing
