Everyone is here _____ Li Lei, because he is ill inhospital.

You seem to be familiar with this city.-I_______here for three years. It’s great to be back.

_____ the Internet is of great help. I don’t think it’s a good idea to spend too much time on it.

He set_________ at about 9 o’clock. [ ]

Mr. Li will go to Guangzhou by air. His workmates are ______ at the airport.