By law,when one makes a large purchase, he should have _____ opportunity to change his mind.
You _______ use your cell phone here in our hospital because of the disturbance to the electronic equipments! It’s forbidden.
——Don’t look down upon Bob. He has his own advantages.——Oh, yes.________ others are weak, he is strong.
Alice left the company half a month ago. Her work______unfinished since.
In order to support the big family, he worked so hard that_______ he made himself ill.
While he was at________college, he took part in political activities, and was soon thrown into prison.