Had it been possible I would have gone to the movies,but I _______ busy.

Mary enjoys homemade food, so she seldom, ________, eats out. [ ]

It is burning hot today, isn’t it? —Yes _______ yesterday

_______ with the present situation, the local government could not findeffective measures to reduce the risk of coal mine accidents.

from the moon, our earth, with water sevenpercent of its surface, appears as a “blue ball”.