There were two small rooms in the house, ____served as kitchen.
| A．the smaller of which | B．the small of which |
| C．the smaller of them | D．the smaller one |
The fire destroyed all _______ was in the building.
| A．what | B．that | C．which | D．who |
______ people have become masters of their country ____ science can really serve the people.
| A．It is only then ;that | B．It is that;when |
| C．It is only when; that | D．It is when;when |
The government is trying to reduce people’s fear _________ they are likely to be affected by the nuclear radiation.
| A．whether | B．what | C．that | D．how |
Their house ______ mine in having no garage.
| A．different from | B．differs from | C．differs | D．differs with |
I _______ my success to my family’s support.
| A．devote | B．contribute | C．refer | D．owe |