It will be a while_____ the real-estate problems _____ are the root cause of the price rises are solved.
| A．since, which | B．after, which |
| C．before, that | D．when, that |
Last week, only two people came to look at the house, _______ wanted to buy it.
| A．none of them | B．both of them |
| C．none of whom | D．neither of whom |
Eric received training in computer for one year, _____ he found a job in a big company.
| A．after that | B．after which | C．after it | D．after this |
Human facial expressions differ from those of animals in the degree ______ they can be controlled on purpose.
| A．with which | B．to which | C．of which | D．for which |
Chan’s restaurant on Baker Street, ______ used to be poorly run, is now a successful business.
| A．that | B．which | C．who | D．where |
Those successful deaf dancers think that dancing is an activity ________ sight matters more than hearing.
| A．when | B．whose | C．which | D．where |