The officer demanded that such things ________ from happening again.
A. prevented B. prevent C. be prevented D. were prevented
After much _______, the shop owner agreed to cut down the price by 15%.
A. debating B. talking C. discussing D. bargaining
Most of the students in our school adore ______ to the cinema.
A. to go B. go C. going D. to going
A man who will ______ his life for his country is a true man.
A. dedicate B. promote C. sacrifice D. devote
____ him so far, she felt a little worried.
A．Having not hear from B．Not having heard from
C．Not hearing from D．Have not heard from
While other scientists are keeping__ __eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in __ __humans.
A. a , / B. an, / C. the, an D. an, the
