3 Clever as he is,________he doesn't work hard enough to pass the test.

问题描述:

3 Clever as he is,________he doesn't work hard enough to pass the test.
A.yet B.however C.so D.but
4 The man we followed suddenly stopped and looked as if _______ whether he was going in the right direction.
A.seeing B.having seen C.to have seen D.to see

感觉应该是yet吧,yet也是表示转折,前面的clever as he is是短语所以不能用but和however连接~
下面一道根据语感选to see..,停下来,为了去看他有没有走错方向