He is only too ready to help others, seldom, _____, refusing them when they turn to him.
| A．if never | B．if ever | C．if not | D．if any |
Responsibility is one of the top qualities parents want their children to have when they _______.
| A．bring up | B．grow up | C．look up | D．pick up |
Mr. Brown was sentenced to 10 years’ imprisonment（监禁） for ______ murder.
| A．practicing | B．confirming | C．performing | D．committing |
There is some doubt ____ the sick schoolboy can join in the English evening party on Sunday.
| A．/ | B．whether | C．that | D．which |
---- How long ____ at this job?
---- Since 1990.
| A．were you employed | B．have you been employed |
| C．had you been employed | D．will you be employed |
___ I know he will stay here for half a year.
| A．as soon as | B．as long as | C．so far as | D．as well as |