The average temperature this year is _______ that of last year.

have you been married? —For twenty years.

Do you know Earth Day?－Sure, it _______ in 1970 to tell us to protect our earth.

When shall we start?—-Let’s ______ it 8:30.Is that all right?

Will your brother go for a picnic this Sunday?—- If I don’t go, ________.