English teachers are supposed ______their students a test in class, even after class, ______better teaching results.
This is the deepest swimming pool _______ I have ever seen in China.
Kathy told me that all the doors and windows _______ when she arrived this morning.
It was in the forest _______they found the lost cow.
He knows several languages ________ English, French and Japanese.
John learn French and Spanish at the university. He is good at French, but can’t speak thefluently.