单项选择题
This is a very （）occasion.It is not appropriate to wear casual clothes.
A.messyB.franticC.formalD.jealous
单项选择题 The child couldn’t（）the advanced textbook.
单项选择题 Fluency in English（）my grandmother for a teaching job in her twenties.
单项选择题 I paid him a visit. I（）.
