找英语语法错误
Hesayshissothatheshouldbefriendlytoothers这个是不是该吧says改成told?
Iwillreturnthebookbackintwodays这个是哪里错了
Todaywe'llclimbamuntainthatis800metersoversealevel这个是改把is改成are
Idon'tknowwhenwillhecomeback这个是该改成whenhewillcomeback么
Ithinkheisn'taveryhard-workingstudent这个是该改成Idon'tthink的结构么