.I need to call my friend David _________ coat I walked off by mistake yesterday.
America is an country. You can hear_____ everywhere.
Some students have trouble _____grammar while others have difficulty______ new words.
--What did you say?--So you _____to me.
"Why don’t you stay here over the weekend? " She said._______
Watching TV is____ a kind of relaxation, and it also ____our knowledge.