It is one thing to enjoy listening to good music,but it is___another to play it well yourself
| A．quite |
| B．very |
| C．rather |
| D．much |
The students ________ busily when Miss Brown went to get a book she ______ in the office.
| A．had written, left | B．were writing, has left |
| C．had written, had left | D．were writing, had left |
By _____, water can be changed into gas.
| A．heating | B．being heated | C．having heated | D．heated |
Mr. Green is said _____ an experiment to prove the new method of solving the problem when young.
| A．to do | B．to have done | C．to be doing | D．to have been doing |
You will see this product made in this factory _____ wherever you go.
| A．to be advertised | B．advertised | C．advertise | D．advertising |
_____ the big snake, the little girl stood under the tree _____ to death.
| A．Seeing; frightened | B．Seeing; frightening |
| C．Seen; frighten | D．To see; frightening |