Many human activities also _______carbon gases, which will result in global warming.
| A．put off | B．send off | C．let off | D．set off |
--Have you turned off the light?—Sorry, I ___ all about it.
| A．have forgotten | B．forgot | C．had forgotten | D．would forget |
You don't need to describe her, I ___ her serveral times.
| A．had met | B．have met | C．met | D．meet |
---You phone number again? ---I ___ quite catch it---It is 3453789..
| A．didn’t | B．couldn't | C．don’t | D．can’t |
---___ the sports meet might be put off.----yes, it all depends on the weather.
| A．I’ve been told | B．I’ve told | C．I’m told | D．I told |
--Do you like the match?---Yes, it ___ very soft.
| A．is feeling | B．felt | C．feels | D．is felt |