As we all know, __________ of the earth surface is covered by water.

Fred entered without knocking and, out of breath, sank________ a chair.[ ]

Last Sunday I took my daughter to a friend’s birthday party, where we________for two hours.

r Jane has gone to the Holy Island for her holiday.—Oh, how nice! Do you know when she

What a good girl Lisa is!— Yeah, she often her seat to the old on buses.