Mt Everest (珠穆朗玛峰) is 8, 844. 43 meters ______ sea level. [ ]

Amy is _______ unusual girl. She has traveled to 15 countries in _______ world.

The teacher with his students _____ playing _____football at this tine yesterday.

Heatdoesnottravelbyconnectioninsolid,becausethesoliddoesnotmove,________. [ ]

I find _______difficult to get to sleep because the man upstairs made much noise.