—Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.”—Sorry, I’ll __________ right now. 

I _____a girl,and Tony______a boy, we（我们）____friends.

Tomorrow David will have an important meeting, so he will _____a suit at the meeting.

I     a letter from him since he left.

 He never ______learning English. That was why he was successful at last.