---- It is generally believed that teaching is __________it is a science.
| A．an art much as | B．much as an art as |
| C．as an art much as | D．as much an art as |
You may catch up with others__________you work a little harder.
| A．so long as | B．so far as | C．however | D．unless |
__________ the students are doing their maths exercises with the help of the teacher.
| A．Three score of | B．Three scores |
| C．Score of | D．Scores |
---- ______was it______ you discovered the secret of his?
-----Totally by chance .
| A．How; that | B．How; when | C．What; that | D．What; when |
------Do you feel like ___there or shall we take a bus?
-----I’d like to walk. But since there isn’t much time left ,I’d rather you ___a taxi.
| A．walking; hire | B．to walk; hare | C．to walk; hired | D．walking; hired |
The day we are looking forward__________at last.
| A．to come | B．to coming | C．came | D．to came |