---Did you see clearly who the driver was? ---No, so quickly _____ that I couldn’t have a good look at the face.
We had ____ fun at Mary’s birthday party last Sunday.
On hearing his son’s survival, the worried mother _______
He behaves _______ he were better than us.
The question of drug-taking is bound to(一定要) ______ at the next conference.
_______ and you will make rapid progress.