56、 I must congratulate you__________the excellent design of the new bridge．
A．with
B．of
C．at
D．on


57、 __________ before we depart the day after tomorrow，we should have a wonderful dinner party．
A．Had they arrived
B．Would they arrive
C．Were they arriving
D．Were they to arrive


58、 Our boss is going to have his manager__________ to make an reservation for a meeting in Thailand soon．
A．to rearrange
B．rearrange
C．rearranged
D．rearranging


59、 __________ the temperature falling so rapidly，we couldn’t go on with the experiment.
A．Since
B．For
C．As
D．With


60、 In all，6 000 companies are__________ in producing the parts that are needed for these aircraft．
A．concemed
B．recommended
C．involved
D．offended


61、 I believe he__________ an accident，otherwise he would have arrived on time.
A．would have had
B．could have had
C．should have had
D．must have had


62、 The doctor advised her that she__________ enough rest before going back to work．
A．to get
B．get
C．gets
D．got


63、 __________，the police would have caught the criminal earlier．
A．Had they received the clue in time
B．If they received the clue in time
C．They had received the clue in time
D．Did they receive the clue in time


64、 His business is growing so fast that he must__________ more workers.
A．take up
B．take on
C．take over
D．take out


65、 Over a third of the population in that African country was estimated to have no__________ to the health service．
A．excess
B．SucCess
C．process
D．access