Marry was holidaying with her family in a wildlife park______she was bitten on the leg by a lion.
#95127
A
while
B
when
C
before
D
after
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It is the second time that I____ in Beijing 
#92034
A
am
B
was
C
have been
D
had been
To succeed in doing an experiment,________.
#94929
A
carefulness is needed
B
carefulness is one needs
C
one needs to be careful
D
one need be careful
As far as I see, ________is no possibility ______he will win the tennis match this time.
#92332
A
it; that
B
there ; that
C
it; whether
D
there; whether
In my opinion,life in the twenty-first century is much easier than _______.
#94673
A
that used to be
B
it is used to
C
it was used to
D
it used to be