问题
选择题
Up to now nobody able to do this better than Charlie Chaplin.
A．is
B．has been
C．was
D．will be
答案
答案：B
考查时态。Up to now，到现在为止，是现在完成时的标志，所以选B。
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Up to now nobody able to do this better than Charlie Chaplin.
A．is
B．has been
C．was
D．will be
答案：B
考查时态。Up to now，到现在为止，是现在完成时的标志，所以选B。