Why ____it get colder when we go up a mountain ?We are getting nearer to the sun !

My grandfather loves keeping pets．He said a pet could help a person feel______.

If you feel tired and sick of fat food, that is ______ you have to go to the hospital for medical examination.

Newscame from the school office ________Wang Lin had been admitted to BeijingUniversity.

elly like shopping—–Well,she would rather spend time __________ at home than __________in the street