When it comes to “empty-nest syndrome(综合症)”, parents are advised to _______regular contact with children through phone calls, emails, texts or video chats. 

 To the surprise of the manager, Mrs. Black, who is not easy to deal with, quickly ________ and accepted the new work schedule.

The farmers expanded their production to meet the increasing demand _____ locally grown food.

I think I'll have a cold drink __________ coffee.

Don’t be shocked if you realize a man ____ is actually a millionaire. Rich people are weird.