EXERCISE 2. HÃY CHO BIẾT TỪ ĐỒNG NGHĨA HOẶC GẦN NGHĨA, TỪ TRÁI NGHĨA C...

15. Things clear to them so that they can do the work in the way that you have told them.A. are making B. ought to be made C. have made D. needn’t be made