---- Mary quitted the job again last week.---- Why did she do a thing like that? It seems to make no__________.
It is pretty well understood_______ controls the flow of carbon dioxide in and out the atmosphere today.
— Let’s go to a movie after work, OK?— _____________
He is said to be very rich, but I don’t understand why he is always _______.
I thought I was going to fail the exam, but I passed _______.
I am sure that _______ you said is wrong.