________ seems to be a strong competition in China for senior high students to enter college or university.
Thank you for persuading my mother _______ the army.
—Does he know how to work out the problem? —Yes, he has _______ a good idea to solve it.
The police stopped the car______ speed was more than 120km per hour.
The boss insisted that the task _______before 5 o’clock this afternoon.
We prefer______ alone rather than__________.