He was so busy that he couldn’t help ____________ the experiment.

You’re in a hurry. Where are you going –To the cinema. Sue ______ for me outside.

Music should be tof the brains ofyoung children.

How do you look at the issue —My point is that our government_______ make the public aware of the seriousness of water shortage

The volunteers are doing _____ difficult and important work; they share _____ common goal — to help people in need.