The first thing my brother is going to do this afternoon is to write a letter.
- A.why
- B.who
- C.that
- D.whose
答案
正确答案:C
知识点:定语从句

此题考查定语从句。由于先行词the first thing是物,且关系词在定语从句中作宾语。所以只有that符合条件。故选C。

略
