21.（填空题）宇宙是什么时候形成的？When did the universe________________?

19.（填空题）预算是一个财务计划。A budget is a __________________.

18.（填空题）学生们都非常喜欢这些社区服务项目。All of students are very __________ these community service projects.

17.（填空题）我想他们已经意识到社区服务工作的重要性。I think they ________ of the importance of community service work.

16.（填空题）我将尽一切努力准时到达。I will _________ to arrive on time.

15.（填空题）除了市区的公寓，他们在市郊还有一所房子。____________ the apartment in town, they also have a house in the suburbs.

14.（填空题）如果要进行安全网银交易，最好在电脑上安装最新的软件。If you want to conduct online banking transactions, you’d better install __________ software on your computer.

13.（填空题）我晚上总是睡在电话旁，以备他打进电话来。I always sleep by the phone __________ he calls during the night.

12.（填空题）我们要来讨论一下网络银行交易可能带来的新问题。We are going to discuss problems that might ___________ with online banking transactions.

11.（填空题）如果你经常慢跑，可以使心肺保持良好的状态。You can keep your heart and lungs _________ if you go jogging regularly.

10.（填空题）除了市区的公寓，他们在市郊还有一所房子。______the apartment in town, they also have a house in the suburbs.