Why must we invite her to our discussion—-Her opinion because of her experience.

We wonder if our teachers _____to our graduating party next weekend.If they _______,we’ll be very happy.

The biggest problem for most plants,which_______just get up and run away when threatened,is that animals like to eat them.

What are you _____, Tom —– I’m ________ TV programs.

.Some students often listen to music___classes to refresh themselves