I think take mobile phone to school is useful这个句子有错吗?据说是is useful_英语解答

I think take mobile phone to school is useful这个句子有错吗?
据说是is useful用错了,

人气：193 ℃　时间：2020-03-28 04:01:16

解答

take改成taking
或者I think it useful taking mobile phone to school
I think it useful to take mobile phone to school .