----- I am certain David has told you his business troubles. ----- ______, it is no secret that he owes a lot of money to the bank. 

—I wonder ______you’ll water this kind of flower .—Every other day .

For passengers traveling into the city, taxis and car services charge ________ 50 dollars.

---I think the company may not offer you a good pay.---_______, I won’t take the job.

Most of my friends use their cars ________for their job.