二. 单项选择:21. _____ to become a film star.
__________ from the top of the hill, the city takes the round shape with a flowing river through it.
—What do you want to do next? We have half an hour before the basketball game starts.—__________. Whatever you want to do is fine with me.
Those who have __________ floods and sandstorms knows the importance of environmental protection.
I'm afraid I'll have to; my mom is calling me for supper.
To our relief, the patient's condition is __________