----- Nội dung dịch tự động từ ảnh -----
the mistakes (A, B, C, or D).
51.School children in the same grade (A) in Vietnamese (B) schools are (C) usually the same old (D)
as their class mates.
52. An understand (A) of calculus is (B) essential to the study (C) of engineering (D).
53.Laser discs provide (A) images of best quality (B) than those (C) of either (D) television signals or
video tapes.
54.Some (A) metals such (B) gold, silver, copper, and tin occur naturally(C), and are easy to
work (D).
55.Ozone is an unstable (A), faintly bluish gas that is (B) the most chemical (C) active form of (D)
oxygen.
Insert