He found his house broken into and many things stolen his return from office.A.w
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He found his house broken into and many things stolen _______ his return from office.
A.with
B.in
C.at
D.on
试题答案
D
考查介词用法。on在...的时候;结合句意可知D正确。句意：当他从办公室回来的时候，他发现家被闯入了，很多东西被偷了。