How beautifully she sings! I have never heard _____ voice.

One of the main themes of the summit was “sustainable development”,or the question _________ we can continue developing the world without damaging the environment.

What the boy enjoys _____ to have a room of his own

Hello，Jane，have you arrived at the hotel—–Yeah，busyI’llcall back later

I take the book away—No, you mustn’t. You read it only here.