The boy, one of the so-called rich second generation, forced his parents to buy a new car______it might cost.",

A.no matter how

B.however high

C.no matter how much

D.how much

In the global economy, a new drug for cancer, ________ it is discovered, will create many economic possibilities around the world.",

A.whatever

B.whoever

C.wherever

D.whichever

Please call my secretary to arrange a meeting this afte oon, or ________ it is convenient to you.",

A.whenever

B.however

C.whichever

D.wherever

________ you have to do the job, you should try your best to do it well even though it may be very difficult for you.",

A.Since

B.While

C.Unless

D.Though

The old lady could give the child sympathy, ________ any practical help would be beyond her.",

A.or

B.so

C.and

D.but

__________muchadviceIgavehim,hedidexactlywhathewantedtodo.",

A.How

B.Whatever

C.However

D.Nomatter

__________ regular exercise is very important, it’s never a good idea to exercise too close to bedtime.",

A.It

B.As

C.Although

D.Unless

____I really don’t like art, I find his work impressive.",

A.As

B.Since

C.If

D.While

____ you call me to say you’re not coming, I’ll see you at the theatre.",

A.Though

B.Whether

C.Until

D.Unless

______you told me in secret, I had heard nothing about it.",

A.While

B.Until

C.After

D.Since