Look!They -----(fish) at the lake .选择.They buy tickers-----the movie.A on B for
问题描述：
Look!They -----(fish) at the lake .选择.They buy tickers-----the movie.A on B for
答
Look!They are ----fishing--- at the lake.
They buy tickets---for--the movie
For ,原因,表是为了电影才买票.为什麼是for