—Mum, I've finished my work.—Good, and ________ you choose to play on your PSP or listen to music on your iPod, you mustn't disturb me.
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 youswim 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.