题目内容：

please give us some advice you think is helpful for our computer
不填 which that as

优质解答

C,that
please give us some advice【that】 you think is helpful for our computer
很高兴为您解答,fightout为您答疑解惑
如果本题有什么不明白可以追问,

追问：

为什么which不行

追答：

先行词advice 前有some, 此时一般用that