As a member of the Wild Animals Club, he ____ buys furs.
I often spend a lot of time ________ after class.
After a short rest, the soldiers keep on _________ till midnight.
_________ thing for us is studying hard.
–I can’t stop smoking, doctor. --For your health, I’m afraid you________.
–- Why is Tom unhappy today? -- He got______ points of all the boys.