The girl had hardly rung the bell _____ thedoor was opened suddenly, and her friend rushedout togreet her[ ]

Learning a language isn’t easy It takes time— I agree There’s no short cut

Sorry. I know you here, otherwise I would have greeted you.

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

The man showed us such a heavy stone ________ no one could lift it