托业考试

试题来源：托业-4
【单选题】 No one has turned on the air conditioner______.
A．(A) yet
B．(B) never
C．(C) already
D．(D) soon

参考答案：A
网考网解析：
Adverbs of definite frequency may appear at the en... 查看试题解析出处>>