Challenge 1第7题答案
C;D;B
Challenge 1第8题答案
Challenge 1第9题答案
略
Challenge 1第10题答案
Challenge 1第11题答案
tomorrow;postcard;visit;subway;comic;bookstore;films;evening
Challenge 1第12题答案
(1)hospital
(2)turn left
(3)by bike
(4)see a film
(5)is going to visit