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

37. If he wrote to her, she would be happy.A. She isn’t happy because he doesn’t write to her.B. When he wrote to her, she wasn’t happy.C. She is happy because he has written to her.D. He didn’t write to her, so she wasn’t happy.