用所给词的适当形式填空。
（1）The boys like to listen to music when they do _________ (they) homework.
（2）My mother’s work is _________ (make) our city safe.
（3）One day, Mr. Green asked Mrs. Green _________ (go) shopping for him.
（4）We should brush our _________ (tooth) twice a day.
（5）This book is the lightest and _________ (thin) of all the books.
（6）She is _________ (good) than Alice at swimming.
（7）Jane _________ (get) up at 7:30 am every day. So she is always late for school.
（8）I think the _________ (four) lesson is the most difficult in this book.
（9）Look at the sign. The library is _________ (close) from 1: 00 pm to 2 s 00 pm.
（10）Jason is used to _________ (watch) TV the whole night.