The old town has narrow streets and small houses _____are built close to each other.

－ The book is very good. But I don’t have the money (钱).－ You can your mother some money.

I visited the Qinhu Lake last Sunday. —______ Why didn’t you tell me earlier?

In spite of many invitations, he would always________ to join the get-togethers on account of his health condition.

The views in winter may be wonderful, but it is dangerous to climb the mountains ________a cold and snowy morning.