True friendship is like sound health, _____ value is seldom known until it is lost.
A. whose B. of which C. as D. which
_____ not to hang out at midnight, the boy headed home soon.
A. Reminding B. Having reminded
C. Reminded D. To remind
We could invite John and Barbara to the Friday night party.
Yes, ____? I'll give them a call right now.
A. why not B. what for C. why D. what
With trees and grass _________39.6% of the urban area, the city of Weifang has taken on a new look.
A. covered B. covering
C. to be covered D. being covered
After the high-speed train crash, Chinese President Hu Jintao and Premier Wen Jiabao _____ “all-out efforts” to rescue injured passengers.
A. called on B. called for
C. called up D. called out
In hot and dull summer afternoons, icy coffee ______ a wonderful drink.
A. produces B. makes C. remains D. gets
