1.How long----- it------ (take) you to finish your h

1.How long__did___ it___take___ (take) you to finish your homework this evening?
2.his mother told him _not to use__(not use) computer last night
3._To know__(know) more about the amazing things in the world,they read a lot
4.something unusual _will happen____(happen) to you if you __are not__(not be) careful
5.how wonderful the song _sounds___(sound)
6.i noticed him_reading___(read) a story when i _walked___(walk) past his room.
再问： 第一题为什么用过去式..
再答： 这句后面有this evening,说明不是一个常态的动作，是今晚特指的情况，要么是今晚已经发生要么今晚的事情还没发生，这种情况一般不会用一般现在时的。。。