—Who broke the window?— ______. A strong wind broke it last night.
---Who’s the lady ________ in red?---I guess she is Lily’s mother by what she _______.
--- Do you know whether scientists have ________a good way to deal with Influenza H7N9 or not?---Not yet .But they’re trying their best.
The sports meeting will continue _______it rains this afternoon.
---How much do I have to ____you? I think it's a bit expensive.--- I don’t think so . It’s only three hundred pounds.
I didn’t know which bag was better than the other, so I took them________.