Mark the letter A, B, C or D on your answer sheet to show the underlinedpart that needs correction in each of the following questions.
Energy exists in different forms, such as light, heat, and chemical, mechanic, and electrical energy.
A. In
B. Forms
C. Mechanic
D. Electrical
Đáp án là C.
mechanic (n) => mechanical (adj); vì từ “and” nối các tính từ : chemical, .... , and electrical => phải dùng tính từ “mechanical”