Mike, you’re often late for class. Why _______ you get up earlier in the morning

What can I do for you, sir?—No, I only want to speak to the person __________.[ ]

Mr. Wang, to experience different cultures, set off for Africa last week.

won the first prize and you can imagine how excited I was when the Mayor ________ me with the reward.

Look! The boy is singing _____________ the classroom.