辨字组词。

连____           根____         他____

莲____           跟____         她____

王伯伯用温室大棚生产蔬菜，为了提高温室大棚内蔬菜的产量，你认为他可以在温室大棚内采取的措施是（    ）

—Are all the students from         in your class?

—No, there are only three       in our class. The others are from other countries.