________ from the moon, our earth with water ________ seventy percent of its surface looks like a blue sphere.
| A．Seen; covered | B．Seeing; covering | C．Seen; covering | D．Seeing; covered |
In some parts of London，missing a bus means _____for another hour．
| A．waiting | B．to wait | C．wait | D．to be waiting |
What a great weight the mother felt ____her mind the moment she found her lost son!
| A．turned off | B．brought into | C．set free | D．taken off |
---I’m terribly sorry to have put you to so much trouble.
---______. You didn’t mean to, did you?
a.forget it b. no trouble c. all right d. you’re welcome
一Are you going to have a holiday this year?
— I’d love to. I can’t wait to leave this place_______.
| A．off | B．out | C．behind | D． over |
Generally speaking, ____according to the directions, the drug has no side effect.
| A．when taking | B．when taken | C．when to take | D．when to be taken. |