单项选择题（共20小题，每题1.5分，共30分）
1． 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
2． Mum is coming.What present______for your birthday?
A.you expect she has got
B.you expect has she got
C.do you expect she has got
D.do you expect has she got
