Is Rick often late for work —Never. He always _________ on time.

Whydoyoulooksoworried?—MyMacBookProbrokedownandmypaper______unfinishedsince

My English teacher’s humor was ____make ever student burst into laughter.[ ]

Nantong is _________ east of China and _________ north of Suzhou.

The sand in the river is increasing these years. We must to protectthe environment.