1 . He must be ill, ________ he looks so pale.
A.since | B.because | C.as | D.for |
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2 . The changes in the city will cost quite a lot, ________ they will save us money in the long run.
A.or | B.since | C.for | D.but |
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3 . You may use my room as you like ________ you clean it up afterwards.
A.so far as | B.in case | C.even if | D.so long as |
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4 . Someone called me up in the middle of the night, but they hang up ________ I could answer the phone.
A.as | B.since | C.before | D.until |
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5 . John may phone tonight.I don't want to go out _______ he phone.
A.as long as | B.in order that |
C.in case | D.so that |
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