小题1:This book is not useful for today’s students.
This book is ▲ for today’s students.
小题2: Mary has been in Hong Kong for a month.
Mary ▲ Hong Kong a month ago.
小题3: In the past people thought the earth was flat.
People ▲ to think the earth was flat.
小题4:The family didn’t have enough money to send her abroad.
The family couldn’t ▲ to send her abroad.
小题5:There were about fifteen people in the room, and most of them were women.
There were about fifteen people in the room, ▲ women.
1. 本题的含义为这本书对今天的学生没有用，有用的否定前缀词为useful。
2. 本题的含义为玛丽一个月前到达香港，reach可以表示到达的含义，故本题空格处填reached。
3. 本题的含义也可以为人们曾今认为地球是圆的，used to表示曾经或以前的含义，故本题空格处填used。
4. 本题的含义也可以为家人承担不起送她到国外去，afford表示卖得起的含义，故本题空格处填afford。
5. 本题的含义也可以为在房间里有大约15个人，大部分为妇女，mostly表示大部分的含义，故本题空格处填mostly。