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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】________ under the tree? No，they aren’t．
A.
Where are
B.
What is
C.
Are the balls
D.
Is the ball
【单选题】一 Why did Miss Wang look so worried when I saw her?- Because she wanted to know .[ ]
A.
where did the other students go
B.
when would the policeman come
C.
what her students have done during the trip
D.
if her students had survived in the earthquake
【单选题】I know Thanks giving Day is traditional (传统的)in your country. But what’s the reason__________ the holiday?[ ]
A.
on
B.
of
C.
for
D.
to
【单选题】I’ll never forget the days ______ we spent together in the country.
A.
which
B.
on which
C.
when
D.
on that