（2013天津）—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

（2014甘肃兰州）She________to an English program while her parents________TV．

A．was listening；is watching

B．listened；were watching

C．was listening；watched

D．was listening；were watching

（2014广东）—I didn’t see you at the beginning of the party last night．

—I________on nay biology report at that time．

A．worked

B．work

C．was working

D．am working

The girl was flying a kite________her father came back．

A．when

B．while

C．until

D．after

—I went to see you yesterday evening．But you weren’t in．Where were you then?

—I’m sorry．I________a walk by the lake with my classmates．

A．am taking

B．was taking

C．take

D．took

While we________about Mr.Wang in the classroom，he came in．

A．talked

B．are talking

C．were talking

D．talk

I was doing my homework________my father was reading newspapers．

A．how

B．while

C．if

—I was at the cinema at 9 o’clock last night．What about you?

—I________at home．

A．am watching TV

B．was watching TV

C．will watch TV

D．watched TV

While he was playing computer games，I called his mother．（对画线部分提问）

________ ________you call his mother?

TV，night，I，watching，at，was，10:00 pm，last（连词成句）