tica holds 90% of the world’s ice, and most of itsfresh water is in a frozen .

u think it’s a good idea to makefriends with your students —_______, I do I thinkit’s a great idea

We must try our best to stop pollution ______a low-carbon(低碳)life.

When is Jay’s concertIt’s ____________ three o’clock ___________ the afternoon of February 8th.

he old man told us most of the story,but _______ the part about the murder.