1.(3)
(这件事应该要看情况而定,因为他说I don't know.这是个否定,所以根据句意,所以为3.)
你认为我们需要多久把沙漠变成耕地?
(1)It's your turn 轮到你了(2)Don;t worry别担心
(3)That depends要看情况而定 (4)It's up to you 这由你来决定
2.(4)
(表示同意对方的做法,还非常的高兴,所以选4)
我可以引导你穿过街道火车站吗?
(1)It's over there 它在那边(2)Of course you can你当然可以
(3)You 'd better think it carefully 你最好想清楚些(4)It couldn't be bette