The old man sat in front of the television every evening, happy______ anything that happened to be on.
| A．to watch | B．watching | C．watched | D．to have watched |
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 |
Mrs. White showed her students some old maps _____ from the library.
| A．to borrow | B．to be borrowed |
| C．borrowed | D．borrowing |