There are many trees on        side of the road. They were planted by us last year.

—Which sweater would you like, madam?
—They look nice. I’ll take       . One for my mother, and one for my father.

—Do you have enough men to carry these chairs?
—No. I think we need        men.

我有两个学习英语的方法。一个是大声朗读英语，另一个是坚持收看英语电视节目。
I have two ways of learning English. ____ is to read English aloud, and ____ ____ is to ____ ____ English TV programs.

—Do you have enough students to clean the laboratory?
—No, I think we need              students.

It’s difficult for me to decide which one to choose, because      of them are good.

Lily and her sister look the same. I can’t tell one from       .

A smile costs nothing, but gives so       .

—Which do you prefer, an iPhone 6 or a SAMSUNG SVS-5S?
—      . I would rather buy a mobile phone made in China.

在中国近代史上，林则徐是最著名的民族英雄之一。
Lin Zexu was ____ of the most famous ____ heroes in recent history.