[单选题] [填句补文]More and more Americans are living alone. Some live alone because of divorce or the death of a partner. ________. According to a recent U.S. census (人口普查)， 25 percent of all households in the U.S. are made up of just one person.

1、[单选题]He arrived at the office early, ______ a good example to the others.

• A、set
• B、to set
• C、to be set
• D、having set

• 点击查看答案
• 进入题库做题

2、[单选题]Please make my excuse at tomorrow’s meeting — I’ve got too much work ______.

• A、to do to come
• B、doing coming
• C、to do coming
• D、to do coming

• 点击查看答案
• 进入题库做题

3、[单选题]He made up his mind to devote his life _____ pollution _____ happily.

• A、to prevent, to live
• B、to prevent, from living
• C、to preventing, to live
• D、to preventing, from living

• 点击查看答案
• 进入题库做题

4、[单选题]“Do you know the girl in red?” “She seems _____ me at last month’s party. But I’m not sure.

• A、to introduce to
• B、to be introduced to
• C、being introduced to
• D、to have been introduced to

• 点击查看答案
• 进入题库做题

5、[单选题]He can’t make himself _______. His spoken English really needs ________.

• A、understand, improving
• B、understood, improving
• C、understand, to improve
• D、understood, to improve

• 点击查看答案
• 进入题库做题