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. exposing B. being exposed
C. been exposed D. exposed
相关试题
We work together to achieve our common purpose：_________world that is safer, cleaner and healthier than one we found．
| A．the；the | B．a；不填 | C．a；the | D．the；不填 |
Boris has brains. In fact, I doubt whether anyone in the class has ____ IQ.
| A．a high | B．a higher | C．the higher | D．highest |
William’s first stop was in _____ is a small town under the Himalayas.
| A．where | B．which | C．that | D．what |
_______ you feel exhausted after the long tiring journey, you may as well take a good rest at home.
| A．So that | B．In that | C．Now that | D．In order that |
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