23.Mr. Li_____a secretary for five years in the company, and now he is the general manager of it.
Seldom out time to watch TV on Sunday.
Steven Hawking’s conclusion about the Black Hole is a little , but it has been accepted by most of the world.
_____ matters most in learning English is enough practice.
If I a quarrel with him yesterday, we together now.
It _____ have been Tom that parked the car here, as he is the only one with a car.