In my view, biology is ______ chemistry, but a little easier than mathematics.
| A．a subject so difficult as | B．as difficult a subject as |
| C．as a difficult subject as | D．difficult as a subject as |
He then moved to London, _____ he became famous.
| A．which | B．when | C．where | D．why |
One third of the class _____ agreed to be volunteers to help the aged this vocation.
| A．are | B．is | C．has | D．have |
It’s been years since I _____ myself so much.
| A．enjoy | B．enjoyed | C．have enjoyed | D．had enjoyed |
— We’ll go to climb the moutain this weekend. Would you like to join us?
— _____
| A．That sounds fine to me. | B．It’s really hard work. |
| C．What do I need to prepare? | D．What may I expect? |
He was born in Beijing and _____ by his grandma in a seaside village.
| A．brought in | B．brought out | C．brought up | D．brought back |