It will be quite a long time _____ she is back again, so don't be too cross with her.
| A．that | B．since | C．before | D．until |
----Who do you think should answer for Li Tianyi’s behavior?
----Actually, I think it is their parents _____.
| A．who are blamed | B．that are to blame |
| C．which are to blame | D．what are blamed |
If you are in a warmer place and can get your skin _____ to the sun for 20 minutes per day, you will need less vitamin D.
A. exposingB. being exposed
C. been exposed D. exposed
----Is there any possibility _____ you could pick me up at the airport? ----No problem.
| A．when | B．that |
| C．whether | D．what |
The teacher stressed again that the students should not _____ any important details while retelling the story.
| A．bring out | B．let out |
| C．leave out | D．make out |
Finding information in today’s world is easy. The _____ is how you can tell if the information you get is useful or not.
| A．challenge | B．competition |
| C．ability | D．knowledge |