Question

Linda’s aunt and uncle _______ workers.

1. A.
   are all
2. B.
   are both
3. C.
   both are
4. D.
   is both

Answer 1

B

Both指两者都，all指三者以上都，题目的主语是琳达的叔叔阿姨两个人，所以用both，另外both要放在be动词后面，实意动词前面，所以选B。句意是：琳达的叔叔阿姨都是工人。