WORLD POPULATION A. PHONETIC I. CHOOSE THE WORD WHOSE UNDERLINED PART...

Lớp 11 Tiếng Anh BÀI TẬP TRẮC NGHIỆM TIẾNG ANH LỚP 11

19) If I ... you were sick. I would have called sooner. A. knew B. had known C. know D. would have known