﹣﹣ Can students go online during lessons？
﹣﹣ They can ________ it is for that lesson．（ ）
| A． |
if |
B． |
or |
C． |
so |
D． |
but |
We will cause less pollution _____________we can find ways to reuse or recycle more rubbish．（ ）
A．unlessB．ifC．though
Most of us enjoy __________to our mothers speak， because our brains greatly prefer the voices of our own mothers．（ ）
A．listeningB．listenC．to listen
Kelly White loves all sports， __________skating．（ ）
A．graduallyB．seriouslyC．especially
Only plants and animals that need very little water __________live in a desert．（ ）
A．canB．needC．must
It's hard to turn down a banana． They taste good and you don't have to wash them __________eating them．（ ）
A．untilB．afterC．before