单项选择题
It’s the first time()late this month.
A.that you’ve arrivedB.that you arrivedC.when you’ve arrivedD.you arrived
判断题 Animal communication systems can be used to refer things which are present or not.()
单项选择题 The health club()I am a member meets once a week.
单项选择题 “It’s at this college()your father studied()he was young”,said the mother.