Some researchers believe that there is no doubt ____ a cure for AIDS will be found.
| A．whether | B．what | C．which | D．that |
—What made the boy ________ in his classroom?
—His hard work and wisdom.
| A．stand up |
| B．stand for |
| C．stand by |
| D．stand out |
Generally speaking，the limits of a person’s intelligence are fixed at birth，but whether or not he reaches those limits will ________ his environment.
| A．depend on |
| B．live on |
| C．feed on |
| D．spend on |
What I should do is ________ the task soon.
| A．to finish |
| B．having finished |
| C．finishing |
| D．to have finished |
Very generally，grammar is ________ with the relations between words in sentences.
| A．regarded |
| B．satisfied |
| C．concerned |
| D．suited |
________ you eat the correct foods ________ be able to keep fit and stay healthy.
| A．Only if；will you |
| B．Only if；you will |
| C．Unless；will you |
| D．Unless；you will |