They often leave the boy alone at home. They think that he’s old enough to look after _____.

Whether age is happy or unpleasant depends less on money or on health than______ on your ability to have fun.

There are ________ flowers in the square during the National Day.

I’m interested ______ running. I can run a kilometer in three minutes. [ ]

Mr Li is very strict his students and he is also stricthis work.[ ]