There is no doubt that students ________in their study if they more praise from their teachers.
---Could you tell me_________? ---Sorry, I have no idea, either. You can ask the policeman over there.
You_________ be too careful while you are driving a car.
What do you think________ if the car________?
The boy_________ "Prince of Basketball" after his_________ in the match.
---So many people are standing outside the hall. ________ will the concert begin? ---________ seven o'clock.