________ research has been done into this difficult and complicated case, so we believe someday we can solve it.
选项:
A:
Extensive
B:
Exstinctive
C:
Executive
D:
Execrated
Extensive
Exstinctive
Executive
Execrated
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Extensive
B:Extinctive
C:Executive
D:Execrated
cry
B:crying
C:cried
D:to cry
cry
B:crying
C:cried
D:to cry
access
B:accomplish
C:admit
D:assess
How can we
B:How we can
C:Why should we
D:Why we should
{ This movie is so impressive that we can’t help ________.
选项: A:cry
B:crying
C:cried
D:to cry
assigned
B:assured
C:automated
D:attributed
now that
B:that
C:because
D:so that
Travel is exciting because we can have new experiences in exotic places.
B:Travel is instructive because we can gain a great deal of knowledge.
C:Travel is difficult because we have to deal with many problems.
D:Travel is discouraging because we have to visit a lot of unfamiliar places.
Whether we had liked it or not
B:Whether or not had we liked it
C:Whether we like it or not
D:If or not we had liked