单项选择题
A.careful B.slow C.fast D.appropriate
21()A.AtB.ToC.OnD.In
单项选择题21()
A.At B.To C.On D.In
This is an old photograph of me when I ______.A.have sh...
单项选择题This is an old photograph of me when I ______.
One of the professor's greatest attributes is ______. ...
单项选择题One of the professor's greatest attributes is ______. ( )