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

406. The greater the number of bacteria attacking the system A. the sooner treatment must be begun B. sooner must begin treatmentC. begin treatment as soon as possible D. must begin treatment sooner