单项选择题

Most matter ______ three states: solid, liquid and gas.

A． have
B． has
C． are
<上一题 目录 下一题>
热门 试题

单项选择题
Mary told me that the story book must ______ to the library in two days.
A． be return
B． be returned
C． been returned
单项选择题
He ______ but ______ nothing.
A． heard; listened
B． listened; heard
C． listened to; heard
相关试题