为了防止计算机病毒的传染，应该做到（）。A.对长期不用的软盘要经常格式化B.对软盘上的

The dean of the Philosophy Department requested that the visiting scholar () a lecture on the philosopher Sartre.

A. gave

B. give

C. would give

D. had given

The following statements are wrong except ______.

A．I learned philosophy at Dean College

B．I got my bachelor's degree at Dean College

C．it is a teacher at Dean College who led me to economics

D．I go back to Dean College from time to time after I graduate from it

Is is requested that the students of the English department ______ (hand) in their term papers before June 10th.

The dean of our department is supposed ______ for Florence the day before yesterday.

A．to leave

B．to have left

C．to be leaving

D．to have been left

The dean of our department is supposed ______ for Florence the day before yesterday.

A．to leave

B．to have left

C．to be leaving

D．to have been left

The dean of our department is supposed ______ for Florence the day before yesterday.

A．to leave

B．to have left

C．to be leaving

D．to have been left

The dean of our department is supposed ______ for Florence the day before yesterday.

A．to leave

B．to have left

C．to be leaving

D．to have been left

Who is the speaker？

A．The general accountant of the company

B．The Dean of the IT Department

C．A professor on business communication

D．A broadcaster of a TV station

Who is the speaker？

A．The general accountant of the company

B．The Dean of the IT Department

C．A professor on business communication

D．A broadcaster of a TV station

_____two copies of undergraduate transcripts and degrees directly to the dean of the graduate school.

A．must send

B．send

C．are to send

D．need send