A. Either, use B. Neither, use
C. Both, not to use D. Neither, to use
A. gave off; to help B. gave up; helping
C. gave away; to help D. gave; helping
A. look at B. look for C. look up D. look after.
A. what should I choose B. which I should choose
C. which should I choose D. what I should choose
A. must be repaired B. was repairing C. must repair D. has repaired
A. if B. so C. though D. and
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