题目内容

Judy Black, ______ is in charge of the clerical staff, is the Office manager.
a. that
b. who
c. whom
d. both a and b

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He ______ and couldn’t find the way to the hotel.
a. puzzled
b. was puzzled
c. is puzzling
d. has puzzled

We are having a party ______ our home ______ Saturday, ______ 6 p.m..
a. on…at…on
b. at…at…on
c. at…on…at
d. on…on…at

Go along the corridor ______ the hall.
a. in the middle of
b. among
c. between
d. in center of

导致需求量和价格反方向变动的原因是()
A替代效应
B过剩效应
C短缺效应
D收入效应

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