All possible means ___ been tried to stop the air______.
| A．has, polluted | B．have, polluting |
| C．have, being polluted | D．has, being polluted |
---I honestly don't think I'm going to be admitted.
---Wel1, you never know! You________ a better impression than you think.
| A． |
may have made |
| B． |
should have made |
| C． |
couldn't have made |
| D． |
needn't have made |
Mary became a baker at age 14, because her grandfather paid the local baker ________ her all the skills.
| A． |
to have taught |
B． |
to teach |
C． |
teaching |
D． |
having taught |
Although a few have come and gone, the restaurant's regular customers have________ the same for nearly 40 years.
| A． |
stayed |
B． |
turned |
C． |
grown |
D． |
got |
I told you! I really am ranked the lowest. Number 25 out of 25 players.
________ You've got nowhere to go but up.
| A． |
Tell me a bit more. |
| B． |
I'm not so sure about that. |
| C． |
Look on the bright side! |
| D． |
That is absolute nonsense! |
It seemed that I had become ________ my parents had wanted me to be.
| A． |
when |
B． |
where |
C． |
what |
D． |
whether |