Question

The first thing _____ my brother is going to do this afternoon is to write a letter.

A．which

B．that

C．why

D．who

Answer 1

B

本題考查定語從句that的用法。在定語從句中先行詞為當先行詞是不定代詞all, much, something, everything, anything, nothing, none, the one, thing時，不定代詞用that. 在定語從句中當先行詞為物時，用which或that; C項為副詞，在定語從句充當狀語，與題意不符，故排除。D項當先行詞為人時，用who或whom. 故選B。