CHỌN TRONG SỐ A, B, C HOẶC D THÍCH HỢP NHẤT VỚI CĐU ĐÊ CHO

18.Chọn trong số A, B, C hoặc D thích hợp nhất với cđu đê cho :Mary wants to buy that book but she does not have enough money.A. If Mary had enough money, she would buy that book.B. If Mary had had enough money, she would buy that book.C. If Mary has enough money, she will buy that book.D. If Mary had enough money, she will buy that book.