What I want to to teenagers is that being addicted to the Internet will to some extent do harm to both mental and physical health.
The field research will take Joan and Paul about five months; it will be a long time ________ we meet them again.
I just wonder ________ that makes him so excited.
By nine o’clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ________ appeared a rare rainbow soon.
— It’s burning hot today, isn’t it? — Yes. ________ yesterday.
“Freeze, you guy! ________, and I’ll shoot you.” an old man with a gun in hand shouted at me.