单选题：Many people in the West make ________ a rule to buy Christma..

— Can I ask you a few straightforward questions about yourself?— No problem. I like _____ when people are open and direct.[ ]A. thatB. this C. itD. them

I will appreciate if you paid in cash. [ ]A. thatB. youC. this D. it

I would appreciate ____, to be frank, if my cell phone could be fixed as soon as possible. [ ]A. you B. itC. this D. myself

The doctor thought _____ would be good for you to have a holiday. [ ]A. this B. that C. oneD. it

_______in the regulations that one should not tell other people the password of your email account. [ ]A. What is recommended B. What recommend C. It is recommendedD. It recommend