() 1. This yellow scarf ______ be Lily's. She likes red.
A. must
B. could
C. couldn't

C

() 2. There is nothing ______ about. Everything will be OK.
A. to worry
B. worrying
C. worried

A

() 3. He made us ______ by making faces.
A. to laugh
B. laugh
C. laughing

B

() 4. —Why did you organize the party?
—______ some money for the poor children.
A. Raise
B. Raising
C. To raise

C

() 5. You'd better ______ your coat. It's cold outside.
A. put on
B. to put on
C. putting on

A

二、用括号内所给单词的适当形式填空。
1. Lisa volunteered ______ the floor at the old people's home. (sweep)
2. I noticed him ______ the chair in the park yesterday. (clean)
3. Could you ______ me your dictionary? Mine is at home. (lend)
4. ______ more about Chengdu, Jack decided to visit Chengdu. (learn)
5. The problem was too difficult for students ______. (understand)

2. “notice sb. doing sth.”表示“注意到某人正在做某事”，根据语境，这里是说昨天注意到他正在公园里打扫椅子，所以用cleaning。
3. “Could you do sth.”是表示委婉请求的句型，后面接动词原形，所以用lend。
4. 这里用动词不定式To learn作目的状语，意思是“为了更多地了解成都”。
5. “too...to...”是固定结构，表示“太……而不能……”，所以用to understand。
1. to sweep 2. cleaning 3. lend 4. To learn 5. to understand

三、按要求完成句子,一空一词(含缩写词)。
1. John asks me to close the window. (改为否定句)
John asks me ______ ______ ______ the window.
2. I find to be independent early is helpful for children. (改为同义句)
I find ______ helpful for children ______ ______ independent early.
3. To finish my homework takes me one hour every day. (改为同义句)
______ takes me one hour ______ ______ my homework every day.
4. Mary didn't know what she should do next. (改为同义句)
Mary didn't know what ______ ______ next.
5. Could you help me take out the rubbish? (作出否定回答)
______, ______ ______.

2. 原句中“to be independent early”作宾语，可使用it作形式宾语，真正的宾语是后面的“to be independent early”，即I find it helpful for children to be independent early。
3. “To finish my homework takes me one hour every day”表达“完成我的作业每天花费我一个小时”，可以用固定句型“It takes sb. some time to do sth.”，所以填It; to finish。
4. “疑问词+动词不定式”可以和含有宾语从句的句子进行转换，“what she should do next”可转换为“what to do next”。
5. 对于“Could you...?”的否定回答常用“Sorry, I can't”。
1. not to close 2. it; to be 3. It; to finish 4. to do 5. Sorry; I can't