Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.
A waitress served us. She was very impolite and impatient.
A. A waitress, who served us, was very impolite and impatient
B. A waitress, which served us, was very impolite and impatient
C. A waitress who served us was very impolite and impatient
D. A waitress whom served us, was very impolite and impatient
A
Đáp án B sai vì “which” không thay thế cho danh từ chỉ người “ a waitress”
Đáp án C sai vì” a waitress” đã xác định
Đáp án D sai vì “ whom” không thay thế cho danh từ làm chủ ngữ
=> Đáp án: A