() 2.Don't require him to do so much housework. ______, he is only five years old.
A.In all
B.After all
C.Above all
D.Not at all

B

"Don't require him to do so much housework."意为“不要要求他做这么多家务”，后句"he is only five years old"是说明原因，“毕竟他才五岁”。After all表示“毕竟”，符合语境。In all“总共”，Above all“首先”，Not at all“一点也不”均不符合。

() 3.Forty per cent of the pollution in my hometown ______ produced by people in the past two years.
A.has been
B.were
C.have been
D.was

A

首先，分析句子结构可知，“Forty per cent of the pollution”作主语，其中“pollution”为不可数名词，因此谓语动词应用单数形式，排除B、C选项。再根据时间状语“in the past two years”可知，句子应用现在完成时，表示过去发生的动作对现在造成的影响或结果，即过去两年里家乡的污染有40%是由人们造成的，这个影响是持续到现在的。而“was”为一般过去时，不符合句意，排除D选项。因此，正确答案为A，即“has been”，表示现在完成时的单数形式。

( ) 4.—I'm looking forward to the film The Battle at Lake Changjin. When will it begin?
— next month.

A.Until
B.Not until
C.Since
D.Till

B

问句询问电影《长津湖》何时开始，答句“next month”表示时间点。“Not until next month”意为“直到下个月才（开始）”，符合语境。Until和Till后常接时间段，Since用于完成时，均不符合。

() 5.The experiment the young scientist devoted a lot of time to ______ at last.
A.failing
B.to fail
C.fail
D.failed

D

句子主语为"The experiment"，其后"the young scientist devoted a lot of time to"为定语从句（省略关系代词that/which，指代先行词experiment），主句缺少谓语动词。"at last"提示用一般过去时，谓语动词用过去式。选项中只有D是过去式，可作谓语。

() 6.—Is John coming?
—No. He ______ his mind after a phone call at the last minute.

A.changes
B.has changed
C.was changing
D.changed

D

根据对话内容，“John 是不是要来？——不，他在最后一刻接了一个电话后改变了主意。”这里描述的是过去的一个具体时间点（接电话后）发生的动作，即他改变了主意。因此，应该使用一般过去时。选项 A 是一般现在时，表示经常或习惯性的动作；选项 B 是现在完成时，表示从过去某一时间开始一直延续到现在的动作或状态；选项 C 是过去进行时，表示过去某一时间正在进行的动作；选项 D 是一般过去时，表示过去某一时间发生的动作。根据语境，选项 D 符合题意。

三、信息还原
阅读下面的短文,从其后的选项中选出能填入空白处的最佳选项,有两项是多余的。
Emotions are feelings, like anger, hurt, fear, happiness, joy and love. 1 It happens to everyone.
Do you keep your feelings inside, or do you like to show the world how you feel? Whatever feelings you are having are okay. Your body and brain are telling you something through your emotions.
Do you feel nervous? 2 Maybe you're thinking, "This isn't important." Well, think about this: when you are bored, your brain is telling you that you are ready to learn a new skill. The feeling of being bored can give you space for thinking carefully.
3 When we are able to show our emotions rightly, we think and act in a better way. We get on better with our family and friends. We understand ourselves, and others understand us. And it feels so good.
It is important to know our feelings. 4 We should not keep them deep inside. Instead, we should understand these bad feelings and direct(引导) them in the right way. 5
A. If so, you could say that you feel bored.
B. It's usual to have these feelings sometimes.
C. Feelings like anger and sadness are not too bad.
D. Taking time to understand how we feel is important.
E. It's important for us to get on well with our family.
F. The feeling of being happy gives you space for thinking carefully.
G. Understanding our emotions can help us get on well with others.
1.
2.
3.
4.
5.

1. B
2. A
3. G
4. C
5. D