()4. —Who is ringing the doorbell?
—Maybe ______ is your aunt.

A.he
B.she
C.it
D.this

C

当不确定敲门人的性别时，常用it指代。问句询问“谁在按门铃”，答语“Maybe...is your aunt”中，在确认是姑姑（女性）之前，用it指代未知身份的人。A.he指男性，B.she指女性，D.this一般指近处的事物，均不符合语境。

()5. My cousin hasn't found out ______.
A.what's wrong with his computer
B.how should he deal with his broken bike
C.how long he has fallen in love with Rose
D.which was the way to the nearest bus stop

A

本题考查宾语从句。宾语从句需用陈述句语序，且注意时态和动词搭配。
B项“how should he...”为疑问句语序，错误；
C项“fallen in love”为短暂性动词短语，不可与“how long”连用，应改为“been in love”，错误；
D项“which was...”时态不当，问路为客观情况，应用一般现在时“which is”，错误；
A项“what's wrong with...”中“what”作主语，本身为陈述句语序，语法正确。

( )1.
( )2.
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( )15.

C A C B D C B D A C A B B A D

1. 前文“Dad said he could come home by 5:30”与后文“it was almost 7:00”为转折关系，选C。
2. 下文“threw his baseball into the corner”提示此处玩棒球，选A。
3. “but he couldn't”表明尝试做作业但未成功，try to do sth. 符合，选C。
4. 爸爸无法陪玩，应表达歉意，选B。
5. 爸爸需在办公室完成工作，体现忙碌，选D。
6. “only got a D”说明考试失败，选C。
7. 老师因Paul表现异常让他放学后留下，选B。
8. Paul未回答老师问题，应是安静坐着，选D。
9. Paul不做作业可能是想引起爸爸注意，选A。
10. 下文“there was no answer. Then it went to voicemail”表明打电话，选C。
11. 结合“looking out of the window”，应是等待爸爸，选A。
12. 爸爸未遵守陪玩计划，打破计划用break，选B。
13. 前文“lots of problems with my homework”提示帮忙做作业，选B。
14. 向爸爸表达感受后应感到轻松，选A。
15. Paul从之前的压抑到主动表达感受，自身发生改变，选D。