1 . Only then __________ I understand what she meant. （用适当的单词填空）

2 . 我不但认识她，而且是她最好的朋友。
Not only _______________, but also I am her best friend.

3 . Sally’s never seen a play in the Shanghai Grand Theatre, ________?

A．hasn’t she

B．has she

C．isn’t she

D．is she

4 . 它们看起来如此迷人和生动，以至于我想你可能对它感兴趣。(根据汉语提示补全句子)
___________________________look that I think you could be interested in it.

5 . The scientist and engineer_______(have) invented a new machine．（用单词的适当形式完成句子）

6 . It’s crazy of you to spend more time playing computer games than you _______ studying.

A．are	B．have
C．do	D．will

7 . Only when he reached the tea－house ________he realize it was the same place he’d been in last year.

8 . I explained that while I didn’t carry any cash, I________ happen to have a new blanket, and asked him if he could use it. He was thrilled.

9 . By the time I saw the angry expression on his face，I knew exactly what I was having to face.But not for a moment ________   I think I should quit.