His coming adds to the difficulty we ____ the problem A．have to solveB．have sol

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His coming adds to the difficulty we ____ the problem

A．have to solve

B．have solve

C．have solved

D．have solving

答案

解析

略

举一反三

---- Will Thursday or Friday ____ you ? ---- Either will _____ .

A．fit ; be

B．fit ; OK

C．suit ; all right

D．suit ; do

题型：不详难度：| 查看答案

If the balance of nature is ____ , a series of problems will arise .

A．disturbed

B．troubled

C．interrupted

D．confused

题型：不详难度：| 查看答案

When the winter _____ , all the construction works in northern China have to be stopped .

A．sets off

B．sets out

C．sets aside

D．sets in

题型：不详难度：| 查看答案

_____ every word of his were true , what action would the teacher take ?

A．As if

B．While

C．Suppose

D．When

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Because I’ll be very busy this weekend , I’m afraid I had to ____ to take part in the party

A．refuse

B．decline

C．deny

D．reject

题型：不详难度：| 查看答案