Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
When friends insist on ______ expensive gifts, it makes most people uncomfortable
A. them to accept
B. they accepting
C. their accepting
D. they accept
Đáp án là C
Sử dụng cấu trúc: to insist on + V-ing/ N
-> their accepting: sự chấp nhận của họ