It’s good for your health _____ every day.
A. to exercise B. to exercising C. exercise
The accident happened ______ a freezing winter morning.
| A．on | B．in | C．at | D．since |
----The pen writes well though it doesn't cost much.
---- Let me have a try. So _____.
| A．it is | B．it does | C．does it | D．is it |
---Does the child need any help?
----No. He is old enough to _____ himself.
| A．put on | B．wear | C． take care. | D． dress |
---The artist has got _____ much work to do that he hardly has time to help his wife with the housework.
---That's true. Even on Sundays he is busy with his work.
| A．too | B．so | C．very | D．such |
The children ______ not to play with the fire .
| A． are told | B． tell | C． are asking | D．warn |