用所给词的正确形式填空。(每空1分,共6分)
根据句意,用括号内单词的正确形式完成句子。
The popular movie star is of medium _________ (high).
I had a great time _________ (watch) TV yesterday evening.
They made a fire _________ (keep) warm and cook food on.
The twin sisters look the same but do things _________ (different).
The number of the students _________ (be) 60 in our class.
Lily always _________ (walk) to school last year.