Some countries are increasing their use of natural gas, and other forms of ______.
| A．source | B．energy | C．power | D．strength |
The degree _______ the company is able to cope with the uncertainty of the future is worth studying.
| A．of how | B．to that |
| C．to which | D．on which |
Without professional training, you may _______ lots of bad habits when learning to play the piano.
| A．give up | B．catch up |
| C．keep up | D．pick up |
Mandy _________ adoption since her son’s death, but her husband didn’t agree with her.
| A．has considered | B．has been considering |
| C．is going to consider | D．had considered |
---What do you think of her new book? --- There is nothing special about it. I mean it is just__________.
| A．average | B．usual |
| C．normal | D．strange |
According to a recent study, women are _____ to suffer from stomach cancer as men.
| A．twice more likely | B．twice as likely |
| C．more likely twice | D．as twice likely |