—Who telephoned you just now?
— don’t know. I was about to answer the phone when it ________.
| A．rang up | B．rang off | C．hung on | D．rang back |
________ enough time, but he couldn’t do it better.
| A．He was given | B．Given | C．To be given | D．Though he was given |
______ I can know, there is no better way to keep away from the danger.
| A．As long as | B．As far as | C．Just as | D．Even if |
He said he would work it out himself, ________ ask nobody for help.
| A．and not to | B．but not | C．and prefer not | D．rather than |
They were swimming in the river ______ suddenly the storm started.
| A．when | B．while | C．until | D．before |
________ a difficult situation, so you should send a message to him and give some advice to him .
| A．As he is in | B．He is in | C．Being in | D．He being in |