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同学好
以下需要修正：
C
Jack looked at his watch for the twentieth time. Suddenly Jill arrived.  ‘I've been waiting for over an hour, ’he said angrily. ‘You never come on time. ’ ‘Oh, is that so?’Jill answered. ‘Were you here at 2. 30?’  Jack went red. ‘Well, ’he said, ‘I got here five minutes late myself, but you weren't here. ’ ‘I came here at exactly 2. 30, ’Jill said, ‘and I waited for five minutes, but you didn't come. ’ ‘What have you been doing since then? ’Jack asked.  ‘I've just been to the hairdresser's，’Jill answered brightly.

选择题：
5. c
a. almost certain(几乎肯定)， b. fairly certain(相当肯定)，c. completely certain(完全肯定)， d. nearly certain(几乎肯定)4个选择中只有c. 同前一句中的quite sure(十分确信)意义最接近，所以选c.

7. d
只有d. on是对的,因为它后面的词是the ground,表示在地面上,只能用介词on.其他3个选择都不符合题目意思.
The snake had been on the ground.这条蛇在地面上。
注意本句说的是在蛇被抓起之前，它在哪?它在地面上。

11. c
前一句的短语In this way 是用这种方法,本句需要选一个同这一短语含义相符合的短语.
a. That's so 就是如此
b. like this 像这样
d. so 因此, 这3个选择都不符合题目意思.
只有c. That's how(那就是....的方法)同In this way 的含义相符合,因为how 相当于the way in which ,所以选c.

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