21.They went on working ________it was late at night.
A. even if B. as if
C. however D. as though
22.I hurried ________I wouldn’t be late for class.
A. since B. so that
C. as if D. unless
23.The volleyball match will be put off if it ________.
A. will rain B. rains
C. rained D. is raining
24.________ you talk to someone or write a message，you show your skills to others.
A. At times B. Some time
C. By the time D. Every time
25.Although he is considered a great writer，________.
A. however his works are not widely read
B. but his works are not widely read
C. his works are not widely read
D. still his works are not widely read
26.The new secretary is supposed to report to the manager as soon as she ________.
A. will arrive
B. is going to arrive
C. arrives
D. is arriving
27.We should finish the important job，________.
A. long it takes however
B. it takes however long
C. long however it takes
D. however long it takes
28.________he made an important speech at the meeting was true.
A. That B. Why
C. What D. How
29.________comes to the party will receive a gift.
A. Which B. Who
C. Which one D. Whoever
30.She is willing to help you, ________busy she is.
A. what B. how
C. however D. whatever
31.I don’t care whether he stays ________goes.
A. nor B. then
C. or D. otherwise
32.No matter ________hard it may be，I’ll carry it out.
A. what B. whatever
C. how D. however
33.Why do you want to find a new job ________you’ve got such a good one already?
A. that B. where
C. which D. when
34.________he is, he will be thinking of you.
A. Wherever B. Where
C. Now that D. As soon as
35.You should make it a rule to leave things ________you can find them again.
A. when B. where
C. then D. there
36.He got excited at the news，________ I was calm.
A. when B. while
C. because D. after
37.—Shall Brown come and play computer games?
—No，________ he has finished his homework.
A. when B. if
C. unless D. once
38.________ you try，you will never succeed.
A. If B. Until
C. Since D. Unless
39.Hardly had he arrived in Hongkong ________she rang me up.
A. when B. than
C. that D. and
40.________ they heard the shout for help，they rushed out.
A. Immediately
B. The moment
C. The while
D. All the above
