.
-----I’m terribly sorry to have put you through so much trouble.
-----________. I know you didn’t mean to.
| A．Forget it | B．No trouble |
| C．All right | D．You’re welcome |
Every time the father comes into his room, the boy pretends ______ earnestly.
| A．reading | B．to be reading | C．to be read | D．to have read |
It is a pity that none of the ______ stopped ______ the poor man lying there, begging.
| A．passer-bys; to help | B．passers-by; helping |
| C．passer-bys; helping | D．passers-by; to help |
I went to the newly-built super-market and found there was nothing worth_____.
| A．to buy | B．buying | C．to be bought | D．being bought |
Don’t come in unless ________.
| A．inviting | B．inviting to | C．invited to | D．being invited to |
Many difficulties have ______ as a result of the overuse of coal
| A．risen | B．arisen | C．raised | D．arose |