单项选择题
A.saw B.thought C.understood D.recognized
A．how long do you think that B．international communications C．I cannot see you frequently D．after you finish your degree E．how often do you see me F．I have not seen you in a while G．Learn something important H．So where have you been
A．The electricity had gone off during the night． B．Bob had set the alarm wrong． C．Bob did not want to be late． D．The Internet had informed the radio of a traffic jam．