1 . We will discuss the problem in ________ to ________our understanding so that we can understand it ________.(depth) (所给词的适当形式填空)

2 . 当他专心致志工作的时候经常会废寝忘食。
When ___________________ work, which he often was, he would forget all about eating or sleeping.

3 . His sincerity left a deep impression on her. (句型转换)
→He ________ her ________   ________ his sincerity.

4 . 一看到大海，大海的浩瀚和令人惊叹的美丽给我们留下了深刻的印象。(汉英)

6 . I have been ________(deep) impressed by a number of experiences in her life. (所给词的适当形式填空)

8 . It is not only your enthusiasm but also your teamwork and good spirits that impress us______(deep). (所给词的适当形式填空)

9 . This well is about 50 meters in________.

A．deep

B．deeply

C．deeper

D．depth