（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
