Mr Chen told us that three fourths of the earth ________covered with water.
A. were B. is C. was D. are
Professor Zhang Cunhao and Professor Cheng Kaijia ________China's top science award by Mr President Xi Jinping on 10 January, 2014.
A. presented for B. honoured with C. was honoured for D. were presented with
I think your suggestions are of great ________ to me and they are well worth ________.
A. valuable; to offer B. valuable; giving C. value; taking D. value; to follow
The director wants to make sure no one will solve the mystery until it ________ at the end of the horror film.
A. is explained B. will be explained C. explains D. has explained
There are large numbers of school buses ________designed for primary schools in Taizhou.
A. especially B. specially C. probably D. particularly
—________I complete so much my homework now?
— No, you ________.You can do it after supper.
A. May; ought not to B. Should; can’t
C. Can; mustn’t D. Must; needn’t
