The new supermarket announced that the first to purchase goods on the opening day______________ get a big prize.

You ______swim in this part of the lake. It’s dangerous.

are you doing outside the class Didn’t you hearthe clock ______—Sorry, sir I ______

_____, Lucy is of great help in the work. [ ]

I will not come here tomorrow. — It makes no ______ to me, because I don’t care.