……….LEAVING THE LIBRARY , THEY WENT STRAIGHT HOME . A. BEFORE...

27. - 2 MA DE THI DAI HOC VA DAP AN

Tiếng Anh 2 MA DE THI DAI HOC VA DAP AN

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27. ……….leaving the library , they went straight home .

A. Before B. During C. On D. In.

Find out the mistake in each of the following sentences