6.Tim~s mum is worried _________her son s eyesight as he plats online games too much.
问题描述：
6.Tim~s mum is worried _________her son s eyesight as he plats online games too much.
A.for B.adout C.witn D.of
7.
8.Charlie can’t go with us because he _______ a professor around our company.
A.shows B.was showing C.has shown D.is showing
为什么D?
答
6 B
7 金属
8 D - 因为是can't 而不是 couldn't,所以表示他现在正在做这件事,而不是以前