What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine is tried on _______ volunteers.
| A．不填; 不填; 不填 | B．the; the; 不填 | C．the;不填; the | D．the; a; the |
Some people fear that ________ air pollution may bring about changes in _______ weather around the world.
| A．/; the | B．the; / | C．an; the | D．the; a |
I was _______ when I heard the _______ news!
| A．disappointing; disappointed | B．disappointed; disappointing |
| C．disappointing; disappointing | D．disappointed; disappointed |
The picture on the wall is painted by my nephew.
| A．having hung | B．hanging | C．hangs | D．hang |
It is no good ______ him. He doesn’t help himself.
| A．helping | B．having helped | C．helped | D．help |
Can you ______ your sister from that group of girls?
| A．bring out | B．pick up | C．pick out | D．bring up |