大家好，以下是高中文法问题，麻烦请知道的板友不吝指教。万分感谢
There are many small pieces of metal __________out for you
to stand on and hold on to.
(A) stick (B) that sticking (C) to stick (D) that stick
我的答案D虽然正确，也知道形容词子句。
但是请问选项C错在哪里呢?
上网查看有很多there is/are...加不定词的句子
另外同一课还有一题就是there is/are...加不定词的用法
There are many teachers ______ you in the process of learning.
(A) to guiding (B) guide (C) to be guided (D) to guide
正确答案是D