Newton was sitting under an apple tree ______ an apple fell onto his head.
#92858
A
when
B
while
C
after
D
before
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-- _________ you called yesterday? -- Tom．Why?
#93721
A
Who it is that
B
Who is it that
C
Who was it that
D
Who it was that
With the world economy growing weaker, for many young people, the dream of landing a good job is becoming harder and harder ________.
#92362
A
realized
B
realizing
C
to realize
D
to be realized
The crowd cheered wildly at the sight of Liu Xiang, who was reported, throughout the whole country, ____ the world record in the 110-meter hurdle race.
#92418
A
breaking
B
having broken
C
to have broken
D
to break