Dr Smith is a （special) ______ dealing with such international disputes.

Why can't Dr Smith meet the man at 4:30？

A．Dr Smith will not work at that time.

B．Dr Smith will be out to have a tea at that time.

C．Dr Smith will have an appointment at that time.

A.DR: Smith $1800 CR: sales $1800

B.DR: Smith $2,000 CR: Sales $2,000

C.DR: Sales $1800 CR: Smith $1800

D.DR: sales $2,000 CR: Smith $2000

What time will the man meet Dr Smith？

A．4:00.

B．4:30.

C．5:00.

A.DR: Smith $1800 CR: sales $1800

B.DR: Smith $2000 CR: sales $2000

C.DR: Sales $1800 CR: Smith $1800

D.DR: sales $2000 CR: Smith $2000

A.DR: Smith $1800 CR: sales $1800

B.DR: Smith $2000 CR: sales $2000

C.DR: Sales $1800 CR: Smith $1800

D.DR: sales $2000 CR: Smith $2000

Having been asked to speak at the convention __________ .

A.some notes were prepared for Dr. Smith

B.Smith prepared some notes

C.The convention members were pleased to hear Dr. Smith

D.Some notes were prepared by Dr. Smith

-Excuse me, where is Dr Smith's office？

-________.

A: You can't ask me. I don't know, either.

B; Please don't say so.

C; Sorry, I don't know. But you can ask the man over there.

Mrs. Smith warned her son ______ after drinking.

A．never to drive

B．to never drive

C．never driving

D．drive

A.that

B.when

C.whether

D.if