Have you finished your work yet?　—No, not yet. I think it’ll take _____ ten minutes.

Excuse me. Could you wake me up when my friend _______here?—Of course. But we still don’t know when your friend ______ here.

What were you doing when the UFO ______? —I ______ a milk shake.

My teacher is very young. He ________ medium height.

I like flowers. I hope to study at a school ____ many flowers and trees in it. [ ]