3.  Miss Smith____________ (deal) with lots of letters and emails just now.

2.  The little boy felt too sleepy to stay_____________ (wake).

1.  Mr. Brown is kind enough to give us lots of_______________ (value) information.

5.  Our maths teacher never smiles and he is the______________ (严厉的)of all the teachers.

8.我经常怀疑是否值得花这么多时间练习弹钢琴。

I often doubted__time practising playing the piano.

4.  She___________ (怀疑)if the news was true, but she said nothing.

3.  Can you___________ (想象)what our city will be like in 100 years?

2.  Thank you for your           (建议).They're very useful to me.

7.我确实不知道怎样处理这个问题。

I really don’t know___the problem.

1.  One of the           (原因)of the traffic accident was the carelessness of the driver.