– Who should be responsible for the accident?– The boss, not the workers. They just carried out the order .
----- Where did you ______ our chemistry teacher? ----- It was in the supermarket ______ I saw him.
Yuan Longping makes ____ possible to produce more crops in the same fields with this special strain of rice
Please ______ the traffic regulations.
Only then ______ how much damage had been caused.
Before he came , I’d finished _______ the whole book.