Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. The house was empty when I arrived. They ___________. A. must have gone to bed B. should have gone to bed C. would have gone to bed. D. need have gone to...
Đọc tiếp
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The house was empty when I arrived. They ___________.
A. must have gone to bed
B. should have gone to bed
C. would have gone to bed.
D. need have gone to bed
Đáp án A.
Dùng must have + PP để dự đoán điều gì chắc chắn đã xảy ra trong quá khứ.