1.Some old people are happy_____(be)with the young ones.
问题描述：
1.Some old people are happy_____(be)with the young ones.
2.Don't_____(talk)now.
3.He has two sisiters.One is a doctor and ______is a teacher.
a.another b.other c.the other d.One
提前道谢啦!急用!好的话会加分的.
答
1 to be（动词不定式作状语）
2 talk（助动词DON‘T 后动词要用原形）
3 C (one ...the other特指两者中“ 一……另一……”,固定用法）