I wrote to my parents once a week,____ I was too busy with my teaching work.A.i

I wrote to my parents once a week,____ I was too busy with my teaching work.A.i

题型:不详难度:来源:
I wrote to my parents once a week,____ I was too busy with my teaching work.
A.itB.unlessC.whenD.as

答案
B
解析
unless=if...not。
举一反三
It shocked me to see ______ my neighbors treated their children.
A.whyB.whether
C.howD.since

题型:不详难度:| 查看答案
—Would you like to come to dinner tonight?
—I’d like to, ___ I’m too busy.
A.andB.so
C.asD.but

题型:不详难度:| 查看答案
We are living in an age ______ many things are done on computer.
A.whichB.thatC.whoseD.when

题型:不详难度:| 查看答案
—Do you think we can get there on time?
—Yes,_________ the bus does not break down.
A.even if           .unless      C.until                   D.so long as
题型:不详难度:| 查看答案

3. It is exactly its great success in rural reforms _____ prompted the country to make a bigger leap forward in the reform and opening-up drive.
A.whereB.whatC.thatD.when

题型:不详难度:| 查看答案
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