----What about playing football this afternoon, Sam?-----I would rather _____ at home than _____football, it’s too hot outside.
I haven’t seen Li Hong for a long time. I don’t know ______.
—Ann has finished her homework, hasn’t she?—Yes. She _____ it an hour ago.
—Is your brother at home?—No. He ________ the library. He hasn’t come back yet.
We know that about seventy percent _____ the earth _____ covered by water.
you drive, you will be.