I did not see Tim off at the airport. I feel bad about it now.
Giải thích
ĐÁP ÁN B
50/50
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.
I did not see Tim off at the airport. I feel bad about it now.
I could have seen Tim off at the airport.
If only I had seen Tim off at the airport.
That I did not see Tim off at the airport escapes me now.
It suddenly dawns on me that I should have seen Tim off at the airport.
ĐÁP ÁN B