It’s rather windy today. Put on some warm clothes, _________ you’ll catch a cold.

Now there is a danger ________ the groundmay fall in under the heavy traffic

What a pity! ________joined in the party, I would have met my old friend．

Jack wanted to read more, so he asked his friend ifthere was ________ to read.

Her dream _____ China has come true at last with the help of her grandfather.