EXERCISE 3I. CHỌN TỪ/ CỤM TỪ THÍCH HỢP (ỨNG VỚI A, B, C, D) ĐỂ HÒAN TH...

48. The lumbermen search the forests for valuable trees and choose the ones that ________.A. are easy to cut down B. mature very slowlyC. are tropical species D. are near to rivers