choose A, B, C or D on your answer sheet to show the underlined part that needs correction
Câu 1: Wind is the motion that occurs when lightest air rises and cooler heavier air replaces it.
A. it
B. that occurs
C. lightest
D. cooler
Câu 2: These exercises look easy, but they are very relatively difficult for us.
A. These exercises
B. for
C. easy
D. very relatively
Câu 3: A dolphin can communicate with other by making distinctive sounds.
A. making
B. making
C. communicate
D. other
Câu 4: Salmon lay their eggs and die in fresh water, although they live in salt water when most of their adult lives.
A. although
B. when
C. live in
D. lay
Câu 5: Rock music was original a mixture of country music and rhythm and blues.
A. Rock music
B. original
C. music
D. and
A.
B.
C.
D.