一．选择正确的单词完成句子。
1. (Which,Who) ________ of the things do you do every day?
2. I go to school on ________ (foot,feet).
3. When do you go ________ (home,to home) ?
4. She watches TV ________ (one,once) a week.
5. I get up ________(at,on) 7:00a.m.
6. Sam often plays the ________ (piano,football).
