After Mandela was free (自由的) in 1990, he chose to shake hands with the people ________ wanted to kill him.
—Listen! Can you hear ______?—Yes, I can hear a bird ______ in the tree.
When she heard the bad news, she looked at me ______.
We don’t have plenty of money, so we can’t afford _____ such an expensive car.
Lucy’s boss was strict with her. He made her ____ all the tasks by Friday.
---I won’t come to the party unless Sue ______, too.---You mean if Sue comes you’ll come?