塞满；塞紧 v. s_________

报答；报酬；奖赏 n.&v. r_________

______ under a microscope, a fresh snowflake has a delicate six-pointed shape.

It has been ______ for him by his family to marry a girl of his own class.

Flight nineteen from New York to Washington is now arriving at ______.

I'd rather listen to ______ than watch ______.

All ______ agreed to repeat the experiment.

There are ______ opportunities for employment in the rural area.

He doesn't dare to leave the house in case he ______.

George ______ in this school for forty years by the time he retires.