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）
I was cleaning windows at home at that time yesterday．（对画线部分提问）
________ ________you cleaning windows at that time yesterday?
The old man couldn’t find anywhere to live．（改为同义句）
The old man could________ ________to live．
