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（请给出正确答案）
A.difficult
B.is difficult
C.it is difficult
D.that is difficult
答案
更多“Sometimes___to place physics and chemistry into separate categories.”相关的问题
第1题
【C7】
A．be taking place
B．take place
C．be taken place
D．have taken place
第3题
[ A] instead
[B]in place of
[ C] takes place
[ D] in place
第4题
【37】
A．instead
B．take place of
C．instead of
D．replace
第5题
A．in stead of
B．in place of
C．to take place of
D．exchange
第6题
【B12】
A．take a place
B．take the place
C．take place
D．have taken place
第7题
【C7】
A．instead of
B．in place of
C．to take place of
D．exchange
第9题
What is a pound？
A．A place where animals live.
B．A place for animals to swim in.
C．A place where homeless animals are kept.
第10题
The memorial service took place in ______.
A．1947
B．1948
C．1957
D．1958
