I regret__________ you that the materials you ordered are out of stock.
A.informing
B.having informed
C.to inform
D.to have informed
A.informing
B.having informed
C.to inform
D.to have informed
B.out of work
C.out of reach
D.out of practice
A.was an efficient way of organizing work
B.was an important development in methods of production
C.inevitably led to economic development
D.increased the production of existing goods
A.They may have been caused by the damage to the radio system.
B.They may have taken place during take-off and landing.
C.They were proved to have been caused by the passengers’portable computers.
D.They were suspected to have resulted from electromagnetic interference.
A.take in
B.take out
C.take up
D.take over
A.transferred
B.offended
C.impressed
D.bothered
A.you can find
B.you have found
C.can you find
D.have you found
A.I"d rather
B.I"d like
C.I"m glad
D.I"m fine
A.calm
B.attractive
C.leisurely
D.selected
A.have no privacy
B.have no safety
C.have to act right
D.have to look great
A.carries out
B.carries through
C.carries off
D.carries away
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