_______ is believed, all the scientists subscribe to the view ______ the increase in the earth’s temperature is due to the burning of fossil fuels to produce energy.
| A．It; \ | B．As ; that | C．It; if | D．As; whether |
Do you think the reason _______ he gave is believable?
| A．which | B．why | C．what | D．to which |
_______ his membership card, Tony decided to make a phone call to check whether there was something wrong．
| A．Not having received | B．Not to receive |
| C．Not received | D．Having not received |
It’s years since I _______ him last time, and I haven’t written back to him.
| A．heard of | B．heard out | C．heard about | D．heard from |
Thank you for your timely help; otherwise we _______ in great trouble now.
| A．are | B．would have been | C．would be | D．were |
— How are you getting on with your work?
— Oh, I’m sorry. Things aren’t going so well as _______.
| A．plans | B．planning | C．planned | D．to plan |