---Why didn’t you try your best to get on the bus? ---I tried to, but _____ I could, it started moving.
Some people who don’t like to talk much are not necessarily shy;they just be quiet people.
But for their help,we the program in time.
But for the help of my English teacher, I the first prize in the English Writing Competition.
The doctor recommended that you swim after eating a large meal.
This printer is of good quality. If it _______ break down within the first year, we would repair it at our expense.