16.Chinese is spoken by the _____number of people in the world.
17.I thought that honesty _______ the best policy.
18.-Do you want to wait?
–Five days ________ too long for me to wait.
19.He _______ lives in the house where he was born.
20.The young lady coming over to us _____ our English teacher;the way she walks tells us that!
There was a woman in Detroit,who had two sons.She was worried about them,especially the younger one,Ben,because he was not doing well in school.Boys in his class made jokes about him because he seemed so ___21___.
The mother decided that she would herself have to get her sons to do better in school.She told them to go to the Detroit Public Library to read a book a week and do a book report for her.
One day,in Ben’s ___22___,the teacher held up a rock and asked if anyone knew it.Ben put up his hand and the teacher let him ___23___.“Why did Ben put up his hand?”his classmates wondered.“He never said anything.What could he possibly want to say?”
Well,Ben not only ___24___ the rock,but also said a lot about it.He named other rocks in its group and even knew where the teacher had found it.The teacher and the students were surprised.Ben had learned all this from doing one of his book reports.
Ben later went on to the ___25___ of his class.When he finished high school,he went to Yale University and at last became one of the best doctors in the United States．
26.This is the worst hospital I have ever seen.
27.What would you like to drink,mineral water or tea?
28.It is known to all that exercises are good for health.
29.The traffic jams during morning and afternoon rush hours are a headache in big cities now.
30.You needn’t go there anymore.He already knows about it.
31.What kind of life do most people enjoy?
内容提示：假如你叫张琳，你昨天（4月7日）在放学回家的路上发生了交通事故。你从自行车上摔了下来，被好心人及时送到了医院，医生叫你卧床休息三天，特此请假（ask for a sick leave）