The university estimates that living expenses for international students ________ around ＄8,450 a year, which ________ a burden for some of them．

A．are; is

B．are; are

C．is; are

D．is; is

He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it．

A．wouldn't

B．shouldn't

C．couldn't

D．mustn't

________ warm at night, I would fill the woodstove, then set my alarm clock for midnight so I could refill it．

A．Staying

B．Stayed

C．To stay

D．Stay

Every day ________ a proverb aloud several times until you have it memorized．

A．read

B．reading

C．to read

D．reads

You cannot accept an opinion ________ to you unless it is based on facts．

A．offering

B．to offer

C．having offered

D．offered

Do not let any failures discourage you, for you can never tell ________ close you may be to victory．

A．how

B．that

C．which

D．where

If nothing ________, the oceans will turn into fish deserts．

A．does

B．had been done

C．will do

D．is done

The sun began to rise in the sky, ________ the mountain in golden light．

A．bathed

B．bathing

C．to have bathed

D．have bathed

Around two o'clock every night, Sue will start talking in her dream．It somewhat ________ us．

A．bothers

B．had bothered

C．would bother

D．bothered

You must learn to consult your feelings and your reason ________ you reach any decision．

A．although

B．before

C．because

D．unless