A.have had
B.had have
C.had had
D.would have had
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A.as soon as
B.as well as
C.as soon as possible
D.as early as possible
A.sample
B.receipt
C.record
D.quantity
A.capacity
B.visibility
C.reliability
D.ability
A.take place
B.take over
C.carry out
D.carry over
A.hold；responsibility
B.ask；responsibility
C.hold；responsible
D.require；responsible
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