—What a pity! Their experiment is a failure.
—They ________ better under more favorable conditions.
| A．should have done | B．could have done | C．must have done | D．may have done |
Medicine shouldn’t be kept where it is _____ to children.
| A．possible | B．obtainable | C．enable | D．accessible |
He studied hard, _____ the exam.
| A．aim at passing | B．aiming passing | C．aiming at passing | D．aim to pass |
-- What made her so upset?
-- ______ she failed in her examination.
| A．What | B．That | C．Because | D．Whether |
--Would you like to see a film with us tonight ?
--- I’d like to. But I can’t ______ the time because I have to finish my composition.
| A．afford | B．pass | C．take | D．spend |
–Have you considered ______the job as a teacher?
--Yes. I like it because a teacher is often considered ____a gardener.
| A．to take; to be | B．to take; being | C．taking; being | D．taking; to be |