Mike is often absent from class.” “Tell him he _________ answer for it if he goes on behaving like that.”

_______ we _______ the new policy for economy, we would never have bought the house.

—I wish I _________ the meeting.—But you didn’t .

It is written clearly in the requirements that all passengers _______ check onto board thirty minutes before the plane takes off．

When you _____ into the gallery, you feel as if you____ inside a fragile, white seashell.