If everyone ______, how would we control the traffic?
Đây là câu điều kiện loại 2, trong mệnh đề “if” ta dùng dạng quá khứ của động từ thường hoặc động từ khuyết thiếu. Đáp án là A: could fly
Education in many countries is compulsory________the age of 16.
We must push the piano to the corner of the hall to_____________________ our party tonight.
I am sorry I have no time at present to____________________ detail of our plan.
Only one of our gifted students______to participate in the final competition.
He_______________us but he was short of money at the time.
There has been a great increase in retail sales,_____________________ ?
_______ has been a topic of continual geological research.
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
We all agree that she is____________________ student in our class.
The examination was not very difficult, but it was_____________________ long.