【题目】No one has yet succeeded in explaining the ________of how life began.
A.puzzleB.problemC.causeD.reason
【题目】________ what way did you work out the Maths _____?
A.In, problemB.By, problemC.In, questionD.By, question
【题目】Work is hard. ________ trying and you'll be successful in the end.
A.Give upB.Keep onC.Give inD.Turn on
【题目】The whole street is full of rubbish and it smells ________.
A.badlyB.strangeC.terribleD.wonderful
【题目】You'd better ________ too much time ________ football.
A.not spend, onB.not spend, playC.not to spend, onD.don't spend, for
【题目】The price of the coat is so ________that I can't buy it.
A.expensiveB.valuableC.lowD.high
【题目】A: I'm sorry I stepped out for a smoke, I was tired.
B: There is no________ for this while you are on duty.
A.reasonB.causeC.timeD.excuse
【题目】The book you've just _______(lend) to me is really interesting. I really enjoy it.
【题目】Which do you think is the _______(hot) month of the year in our country?
【题目】The novel is written from _______(person) experience.