In the past the trip _______ very rough and often...

Câu hỏi: In the past the trip _______ very rough and often dangerous, but things _______ a great deal in the last hundred and fifty years.

A was / have changed 

B is / change

C had been / will change  

D has been / changed

Câu hỏi trên thuộc đề trắc nghiệm

- Unit 1. tiếng Anh 12 Có lời giải chi tiết