English teachers are supposed ______their students a test in class, even after class, ______better teaching results.
I wanted to catch ______ early train, but couldn’t get ______ ride to the station.
What he said at the meeting means _______ those who had cut down the forests.
She won a Nobel Prize for her scientific ______.
The flowers ______ my mother, but my sister thought they were for her and took them.
I wanted to have the paperby the end of this month.