肛门内外可见瘘管开口,常有脓性分泌物流出,经久不愈为( )
A. 肛裂
B. 外痔
C. 内痔
D. 肛周感染
E. 肛瘘
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The renowned professor provided much evidence against ______ any extraterrestrial intelligence ever found in the universe.
A. there to be
B. there was
C. there having been
D. there being
I went into the bedroom where Alison was lying down in ______ seemed to be a state of shock.
A. that
B. which
C. what
D. where
Rarely ______ left alone together for any length of time, but one thing now seemed certain.
A. they were
B. were they
C. had they been
D. they had been
He led an attack on what ______ his own castle, and blew it up with dynamite!
A. ought to be
B. ought to have been
C. should be
D. seems to be