This printer is of good quality. If it（） break down within the first year, we would repair it at our expense.
| A． | would | B． | should | C． | could | D． | might |
.If I had ________ chance to say one thing to ________ healthy children, it would be this: having a disability does not mean your life is not satisfying.
| A．a; the | B．/; / | C．a; / | D．/; the |
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 |