I borrowed several books from the library, ________ are about English study.
| A．two of them | B．and two of which | C．two of which | D．two of what |
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 |