Professor Li is the person to ____________ you should write.

A．whom

B．who

C．which

D．whose

He lost his favorite watch, _________ made him very sad.

A．that

B．it

C．which

D．as

Accoding to the old stories of Iceland and Norway,Eric the Red was forced to leave Iceland because he had committed a murder,_______he got into trouble.
A.for which  B,at which  C.in which  D.with which

The study of nearly 10,000 people showed that those who drank more than two cups of coffee or tea per day developed the disease at half the rate of those who drank _________ than one cup each day.

A．little

B．less

C．more

D．fewer

You will have to wait for one more week, _________ the manager will be back from his trip.

A．when

B．before

C．as

D．until

_____ comes first will get the prize.

A．Who

B．Whoever

C．Whom

D．Whomever

I work in a key middle school        the teaching quality is a major concern.

A．how

B．which

C．where

D．that

We will never give in ______ they do or say about our plan.

A．No matter when

B．how

C．whatever

D．although

_________ team wins on Saturday will go through to the national championships．

A．No mater what	B．No matter which
C．Whatever	D．Whichever

The room ______ door is painted green is our headmaster’s office.

A．whose

B．its

C．which

D．of which