Nowadays people are wasting too much energy, so we should lead a low-carbon life.
, we’ll suffer a lot in the future.
| A．When possible | B．If any |
| C．If not | D．Where necessary |
Rarely so much media attention, for the performance has left the audience breathless with excitement.
| A．has an opera attracted | B．an opera has attracted |
| C．is an opera attracted | D．an opera is attracted |
Only when _________________________.
| A．did he arrive the meeting began |
| B．he arrived the meeting began. |
| C．did he arrive did the meeting begin. |
| D．he arrived did the meeting begin. |
_____ the poem a second time, the meaning will become clearer to you.
| A．Our having read | B．When you read | C．While reading | D．If reading |
_____________ that I couldn’t be absorbed in the work.
| A．They made so many noise | B．So loudly they talked |
| C．It was so noise outside | D．Such a loud noise did they make |
If you don’t go to that school, _________.
| A．neither shall I | B．nor do I | C．so do I | D．neither do I |
Not until Betty got to the airport _____ she had lost her tickets.
| A．that she realized | B．did she realize | C．where she realized | D．she realized |
She finally got a high mark in writing. Never in all her life ____ so happy!
| A．did she feel | B．she felt | C．she had felt | D．had she felt |
Only when finished his own work, ask him to help you.
| A．has he, can you | B．he has, can you | C．has he, you can | D．he has, you can |
, and the problem will be worked out..
| A．If you have a bit more effort | B．Having a little effort |
| C．A bit more effort | D．There being a little effort |