Because of ______high demand for Type AB blood,____supplies of it are usually limited.
—Did you visit the museum today? —No. We _____ it, but we spent too much time shopping.
Oh, boy, why are you killing your time this way? Can’t you find something _____ doing?
I am going to do all I can _____ the bad impression you have of me.
The company was willing to provide us with what we needed, _____ made us excited.
_____ the doctors really doubt is _____ my mother will recover from the serious disease soon.