Jack, look! Everybody is doing homework quietly. ______ you make a noise in class?
19._____ your advice, I’m sure to consider it and give you reply in time.
18.--- Tom has a lot of parties recently.---Yes, that may ____ why he didn’t do well in the test.A, sum up B. add up to C. account for D. make sense of
17.I’m ____a diet, since I put ____ weight easily.
16.He is heavily ____ now, so he can’t pay for a new house.
15.---Tom is never late for work. Why is he absent today?---Something ________ to him.