THESE STEPS ARE DANGEROUS. I ______ ON THEM SEVERAL TIMES. A. FELL...

Lớp 12 5 FULL TESTS CƠ BẢN KÈM ĐÁP ÁN BÁM SÁT SÁCH GIÁO KHOA

12. These steps are dangerous. I ______ on them several times. A. fell on B. have fallen C. felt D. will fall