(1)Who's the boy?
(2)Could you please take out rubbish?
(3)How are you?
(4)What's your favorite subject?
(5)Let's go for a walk.
Sure.
No , thanks.
Fine, thanks,
He's my brother.
Good idea.
F. Geography.
为了避免浪费资源,我们必须尽可能多地循环利用.
In order to resources,we must recycle them as much as possible.
尽管天很热,但是工人们没有停止工作. .
我想知道他刚才为什么没有接电话. .
树种得越多,空气越清新. .
明天学校礼堂里有音乐会吗? .