George ought to have arrived _____ this time.
during
on
in
by
本题考查介词辨析。句意:乔治这时 应该已经到了。during在……期间;on在……上, 不与this time连用;in在……里,亦不与this time连 用;by与this time连用时意为“此时,这时”。根据 句意,本题选D。
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