I was staying at home and watching TV________the time of the rainstorm．
| A．for |
| B．by |
| C．at |
| D．in |
There is a ruler on the ground．Please________．
| A．pick up it |
| B．pick it up |
| C．pick up them |
| D．pick them up |
My alarm didn’t________．So I woke up late．
| A．put off |
| B．go off |
| C．take off |
| D．get off |
（北京）—What were you doing when we were playing basketball yesterday afternoon?
—I________the classroom．
| A．was cleaning |
| B．have cleaned |
| C．will clean |
| D．clean |
I saw him in the library yesterday．He________a book at that moment．
| A．reads |
| B．is reading |
| C．was reading |
| D．will read |
Tony________TV when his mother came in．
| A．watch |
| B．watches |
| C．was watching |
| D．is watching |
Yesterday evening I was playing the piano________the doorbell rang．
A．when
B．before
C．while
Most people are________building a paper factory near here．They are worried the river will get polluted．
| A．for |
| B．with |
| C．against |
| D．beyond |
昨天晚上我妈妈很快就睡着了。
My mother________ ________soon last night．
你给我打电话时，我正站在图书馆的前面。
I________ ________in front of the library when you________ ________．
当他走进一家纪念品商店时，我很吃惊。
I was very________when he________ ________a souvenir shop．
天下雨时，你在干什么呢?
What________you________while it________ ________?
他们那时正在购物。
They________ ________at that time．
但是之后，风力会逐渐减弱。
But the wind will________ ________later on．