Medicine should be placed where it is not ______ to children.
| A．accessible | B．available | C．acceptable | D．noticeable |
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— Have you thought of a theme for your poster yet?
— No, I ______ a lot about it, but I haven’t decided.
| A．will think | B．have been thinking | C．had thought | D．was thinking |
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______ left before the deadline, it doesn’t seem likely that John will finish the job.
| A．Though such a short time | B．Because such a short time |
| C．With such a short time | D．As such a short time |
.
Medical ______ shows that men are more likely to have heart attacks than women.
| A．expectation | B．evidence | C．experience | D．exchange |
.
Several years had passed ______ I finally realized the true value of friendship.
| A．when | B．that | C．after | D．before |
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All passengers ______, please fasten your seat belts and remain seated ______ the plane is landing.
| A．on board; before | B．abroad; since | C．on the board; after | D．aboard; when |