努力用功 我和挚友比利去年决心要学英文。我们彼此允诺要努力用 功。我们从不缺课。比利总是会记得做功课。而我也从未忘记做 自己的功课。我们的英文现在很不错了，这就证明了一分耕耘，一 分收获的道理。

Lesson 71
Working Hard
My best friend Billy and I decided to learn
English last year. We promised each other to
work hard. We never failed to attend class.
Billy always remembered to do his home-
work. I never forgot to do mine, either. Our
English is pretty good now. It only proves
that there's no gain without pain.