单项选择题
A.thus B.consequently C.on the contrary D.just as
We have kept（）our friendship by writing to each other, ...
单项选择题We have kept（）our friendship by writing to each other, so we are true friends.
A.back B.up C.off D.down
We failed in our（）to climb the mountain.A.trialB.contem...
单项选择题We failed in our（）to climb the mountain.
A.trial B.contempt C.desire D.attempt
If you want to learn something, you had better pay（）in ...
单项选择题If you want to learn something, you had better pay（）in class.
A.care B.respect C.attention D.notion
