根据中文,完成句子。
1. 我的英语不如她的好。
My English is not ____________ hers.
2. 世界其它地方与美国不同。
Other parts of the world ____________ the United States.
3. 他们正在为数学考试做准备。
They are ____________.
4. 那一定要比坐地铁有趣得多。
That ____________ a lot more fun than ____________.
5. 每天来学校花去我20分钟时间。
It ____________ 20 minutes ____________ to school every day.
1. as / so good as
2. are different from
3. studying for the math test
4. must be taking a subway
5. takes me, to go