1.Mr. Brown always (to wear) a dark suit.
2.The sun often (to shine) all day in summer.
3.The earth (to more) round the sun.
4. The students (to come) here every day.
5. He always (to teach) in this room.
6. She often (to sit) there.
7. He sometimes (to work) until 2 o`clock.
8. He never (to go) to bed before 12 o`clock.
9. She (to read) many books.
10.I fire (to burn) all day in cold weather.