11It sounds like something is wrong with the car's engine（）， we'd better take it to the garage immediately.
A.Otherwise
B.If not
C.But for that
D.Ifso
开始考试练习点击查看答案12——Someone wants you on the phone.——（）nobody knows I am here.
A.Although
B.And
C.But
D.So
开始考试练习点击查看答案13It was a nice meal,（）a little expensive.
A.though
B.whether
C.as
D.since
开始考试练习点击查看答案14Tim is in good shape physically（）he doesn't get much exercise.
A.if
B.even though
C.unless
D.as long as
开始考试练习点击查看答案15The school rules stale that no child shall be allowed out of the school during the day, （）accompanied by an adult.
A.once
B.when
C.if
D.unless
开始考试练习点击查看答案16（）you may have, you should gather your courage to face the challenge.
A.However a serious problem
B.What a serious problem
C.However serious a problem
D.What serious a problem
开始考试练习点击查看答案17（）our manager objects to Tom's joining the club, we shall accept him as a member.
A.Until
B.Unless
C.If
D.After
开始考试练习点击查看答案18The engineers are so busy that they have zero time for outdoor sports activities,（）they have the interest.
A.wherever
B.whenever
C.even if
D.asif
开始考试练习点击查看答案19Just use this room for the time being，and we'll offer you a larger one（）it becomes available.
A.as soon as
B.unless
C.as far as
D.until
开始考试练习点击查看答案20——Our holiday cost a lot of money.——Did it ? Well, that doesn't matter（）you enjoyed yourselves.
A.as long as
B.unless
C.as soon as
D.though
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