Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

different

(A)This new laptop is quite (B)differentiate from (C the old one I (D)had last year.

A. which

B. who

C. why

D. where

A. did

B. gave

C. made

D. took

A. Problems faced by science teachers

B. Learning English through reading books

C. Teaching science and math in English

D. Why English is difficult for students

A. If the restaurant weren't very crowded, I can't find a seat there.

B. If the restaurant isn't very crowded, I can find a seat there.

C. If the restaurant were very crowded, I could find a seat there.

D. If the restaurant weren't very crowded, I could find a seat there.

A. You should turn off your phone before the exam starts.

B. You are required to use your phone for the exam.

C.You must not use your phone while taking the exam.

D. You can use your phone after the exam ends.

A. are encouraged

B. encourage

C. have encouraged

D. encouraged