选D,前半句是对过去的虚拟,所以用would have
so后面跟形容词,因为so提到了句子前面,所以要半倒装,变成疑问句的形式,所以是is the lake.正确的顺序是The lake is so shallow that no fish can live in it.
选D,前半句是对过去的虚拟,所以用would have
so后面跟形容词,因为so提到了句子前面,所以要半倒装,变成疑问句的形式,所以是is the lake.正确的顺序是The lake is so shallow that no fish can live in it.