There is no simple answer, _____ is often the case in science.
| A．as | B．that | C．when | D．where |
Look out! Don’t get too close to the house ______roof is under repair.
| A．whose |
| B．which |
| C．of which |
| D．that |
The doctor ______ is leaving for Africa next month.
| A．the nurse is talking to him |
| B．whom the nurse s talking |
| C．the nurse is talking to |
| D．whom the nurse is talking |
On my way home I met a girl ______ you talked with in the library yesterday.
| A．which |
| B．she |
| C．whom |
| D．whose |
The famous basketball star, ______ tried to make a come back, attracted a lot of attention.
| A．where |
| B．when |
| C．which |
| D．who |
Women ______ drink more than cups of coffer a day have greater chance of having heart disease than those ______ don’t.
| A．who；/ |
| B．/;who |
| C．Who; who |
| D．/;/ |