logo - 刷刷题
下载APP
【单选题】

____ enters the computer rooms should take off his shoes in order to keep them clean enough.

A.
Who
B.
Whoever
C.
What
D.
Whatever
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】The children ____ very quiet;I wonder what they ____ up to.

A.
were; are being
B.
are being;are
C.
are;do
D.
are being;do