I、单项选择：（本题有30小题，每小题1分，满分30分）
1、Danby left word with my secretary ____ he would call again in the afternoon.
A. who B. which C. as D. that
2、The old lady’s hand shook frequently. She explained to her doctor ____ this shaking had begun
half a year before, and ____ only because of this, she had been forced to give up her job.
A. when; how B. how; when C. how; how D. why; why
3、Elephants have their own way to tell the shape of an object and _____ it is rough and smooth.
A.不填 B. whether C. how D. what
4、As soon as he comes back, I’ll tell him when ______ and see him.
A. you will come B. will you come C. you come D. do you come
5、The poor young man is ready to accept _____ help he can get.
A. whichever B. however C. whatever D. whenever
6、I was surprised by her words, which made me recognize _____ silly mistakes I had made.
A. what B. that C. how D. which
