动词填空 用括号内所给动词的适当形式填空。（本大题共8分，每小题1分）
It’s raining cats and dogs. You’d better ___________ (wear) a raincoat to prevent getting all wet.
Luke spent as little time as he could ___________ (play) computer games.
I hope you ___________ (not make) the same mistake again after this serious one.
Not only the twins but also Tom often ___________ (mix) salt with sugar by mistake in the kitchen.
I was playing computer games while my father____________ (read) newspapers last Saturday afternoon.
Those engineers ___________ (build) a model of the future building and left for the USA for more ideas.
—Can I borrow your eraser?        —Sorry, I _________ (use) it at the moment.
Do you know which factory he went to ___________ (buy) more bricks for his new house?