If you ______ earlier, you ________ him.
The little boy got rice to feed the chickens in the yard.
Not until all the fish died in the river how serious the problem of water pollution was.
When I was twenty, I had to before graduation and work in a clothes shop to help support my family.
After the quarrel, I tried all my best to fix the misunderstanding between us, but all my efforts seemed .
Though many extra planes and trains are used to carry passengers, traffic tools are still needed during “May Day” holidays.[