______ I remind you of is to return the book to our English teacher.—I will give it to him ______ I see him.
--- How long have you been here? --- _____ the end of last month.
We keep in touch ____ writing often.
Who is it up _____ decide whether to go or not?
____ that they are inexperienced, they have done a good job.
Thank you for the trouble you have ____ to help me.