1.The scientists()thousands of chemicals before they could find an effective cure that is suitable for the disease.
2.In those days,our()concern was to provide people who were stopped by the snow storm with food and health care.
3.Children who are spoiled by their parents are much more()than others.They are more likely to fight with their fellows for toys and candies.
4.It's unwise()down the proposal.
A.of them to turn
B.for them to turn
C.for they to turn
D.for their turning
5.()would welcome such a chance.
B.A many man
C.Many a man
D.Many a men
6.()you like to have dinner with us tonight?
7.The newcomer()a new post.
B.has been assigned to
C.has assigned to
D.has assigned with
8.There are many kinds of metals,().
A.each having its special properties
B.having its special property
C.one has its special properties
D.each has its special properties
9.The speech which he made()the project has bothered me.
10.For a long time scientists have suspected()life exists on other planets besides the earth,but until recently,they had very little evidence to support this theory.
11..Had he worked harder,he()through the exams.
B.would have got
D.must have got
12.Under no circumstances will William()his position as Mayor to give jobs to his friends.
13.The famous actress became(),and couldn’t say a word when asked about her father,who passed away only last month.
14.Recent medical()has shown that muffling exercise is not as good as widely supposed.In fact,the best time for exercise is in the afternoon.
15.Compared with his elder brother,Tim is even more()to,and more easily troubled by,emotional and relationship problems.
16.Surprisingly,when I arrived at the restaurant,I found the seat I had booked was()by a stranger.
17.It is common sense that you shouldn’t warm yourself up too much.Otherwise,you()yourself before the game begins.
18.The millionaire had more than()money for his simple regular daily cost.Therefore,he sometimes gave away money for the charity.
19.There existed a widespread()throughout the country when a terrible tsunami struck this East Asian island country.
20.To our great comfort,the boy who had been knocked()by a robber came to himself after three days in hospital.