5句英语翻译~~急~~有追加~

you must tell him to make sure the time and the place
it's not easy to keep up with all the class
she hesitates to join the football club
it's impossible for a student to avoid mistakes when studying english
I'm about to call tony to remind him that we'll meet at the school gate at 8 tomorrow morning

你一定要告诉他把时间地点弄清楚。（make sure）
You must tell him to make sure the time and the place.

跟上全班不是一件容易的事（keep up with）
It is not so easy to keep up with the whole class.

她对于是否要加入学校足球俱乐部仍在犹豫。（hesitation）
She still has a hesitation on attending the football club of school.

学生学习英语时不犯错误是不可能的（avoid）
It is impossible for students to avoid making a mistake while learning English.

我正要打电话给tony提醒他我们上午8点在学校大门口见面（remind）
I'm calling Tony to remind him of it that we will meet at the school gate at 8:00 a.m tomorrow .