He ____ busy then; otherwise, I believe, he would have given you a hand.
The manager of the company told us that very little _________ was made of the waste material in the past.
The money he spent within a month _________ more than 1,000 dollars.
-Why did you talk to the teacher after class?-I didn’t understand______________ during the lecture.
Mrs Smith warned her daughter _________after drinking.
You have no idea how she finished the relay race ________ her foot wounded so much.