自由贸易区
参考答案:通常指签订有自由贸易协定的国家所组成的经济贸易集团,在成员国的货物贸易或服务贸易之间彼此取消关税和非关税的贸易限制,但对非成员国仍维持各自的贸易政策。
— He is working hard now.
— He tries ___ English. So he practices ___ English every day.
A.to learn, to speak
B.learning, speak
C.to learn, speaking
D.learning, to speak
— What did Jack ask you just now?
— He wanted to know how long _____ when I reached the cinema. [ ]
A. had the film been on
B. the film had started
C. the film had lasted
D. had the film ended