To his mind, the collaborative development of Beijing, Tianjin and Hebei province is to solve the problems _____ Beijing faces, such as overpopulation, traffic jams, and etc.
A. that B. whether C. when D. why
The houses for the low-income families _______ at present in our city will be completed next year.
A. to be built B. built
C. being built D. having been built
He spared no efforts to make himself _______ but failed.
A. understand B. understanding C. understood D. to understand
Jack, look! Everybody is doing homework quietly. ______ you make a noise in class?
A. Could B. Shall C. Will D. Must
You’d better not leave the medicine_______ kids can reach it.
A. who B. where C. which D. when
There are about 85% of adults _______ the idea of a ban on smoking.
A. welcome B. to welcome
C. welcomed D. welcoming
