A survey of opinions of experts _______that three hours of outdoor exercise a week _______good for one’s health.
| A．show; are | B．shows; is |
| C．show; is | D．shows; are |
When you go by train, please see to it_______ you take an express, _______ that stops only at big stations.
| A．that, one | B．/, the one | C．that, it | D．/, it |
It is nice to see millions who had nothing but a record of misery and hungry ______ to improve their life and living conditions．
| A．having the chances | B．have the chance |
| C．to have the chance | D．had the chance |
--- Do you mean to play the hero in the film?
--- _____. But it should be a character I like.
| A．Not surprisingly | B．Not necessarily | C．Not importantly | D．Not absolutely |
—Can you describe _____ it happened?
—Yes, I was riding on my bike _____ a car knocked me down from behind.
| A．when; as | B．how; as | C．how; when | D．how; while |
Sometimes the boy is a bad-tempered child, but he ____ be quite lovely when he wishes．
| A．may | B．can | C．shall | D．must |