_______ in doing his homework , he didn’t know I had walked in.
A.Burying B.Buried
C.To Bury D.To be buried
If you want to do international trade successfully, ______ of English is _______.
A. good command; a must B. a good command; a need
C. a good command; a must D. good command; must
The number of foreign students attending Chinese universities ___ rising steadily since 1997.
A. is B. are C. has been D. have been
Tu Yoyo devoted herself ________to her research and it made her famous in her field.
A. strongly B.partly C. entirely D. freely
---Do you know Hanhan’s new novel has just _________?
---Really? Can you get _____ for me?
A.come out ; one B.come up; it
C.come across; one D.come to;it
The early people had to many hardships to settle on the new land.
A. get along with B. go back on
C. go into D. go through
