—What a pity! Their experiment is a failure.
—They ________ better under more favorable conditions.
A. should have done B. could have done
C. must have done D. may have done
— It’s no easy task to catch a ticket on a website that receives 1 billion clicks daily.
—I can’t agree with you more. There ________ be errors for every single step.
A．should B．must
C．will D．can
It was Mr. Zhang that helped us out of the trouble. Without his help, we ______ it so easily.
A. can’t manage B. mustn’t have managed
C. couldn’t have managed D. couldn’t manage
假如你是李华，在丹麦访学的一周里，住在Anne家里，现在即将回国。请你给她写一封感谢信，要点如下：
1. 简述你的丹麦之行; 2. 感谢她为你所做的一切; 3. 向她发出邀请。
参考词汇：Denmark 丹麦
注意：1. 适当增加情节，以使行文连贯；
2. 词数100 字左右。
Dear Anne,
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
________________________________________________________________
All the best wishes.
Yours
Li Hua
—Did you attend the opening ceremony of The Voice of China last week?
—Sorry! We ________ it, but we had a terrible traffic accident on our way.
A. must have attended B. must attend
C. could have attended D. could attend
--- Your sister _________ almost all her spare time to studying when she was in high school.
--- That’s right, or she _________ great success in the College Entrance Examination.
A. devoted; wouldn’t have achieved
B. spent; wouldn’t have achieved
C. devoted; hadn’t achieved
D. hadn’t spent; couldn’t achieve
