Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Give her a telephone number___________she gets lost.
A. whether
B. unless
C. in case
D. perhaps
Give her a telephone number___________she gets lost.
A. whether
B. unless
C. in case
D. perhaps
In case: trong trường hợp
You'd better take the keys in case I'm out
You'd better take the keys in case I'm out
Đáp án C.