—— Do you mind my opening the window? It’s a bit hot in here.
—— , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
| C．Yes, I do | D．Come on |
_____earth scientists understand how and why earthquakes happen, forecasts are usually inaccurate.
| A．As | B．While | C．Because | D．If |
Mr. Smith wanted to buy the house and he told me that ____the house cost，it would be worth it.
| A．however | B．how much | C．whatever | D．what |
I was so excited last night that it was a long time _____I got to sleep.
| A．that | B．since | C．before | D．when |
He finally won the general election because many of his promises were quite popular _____ the voters.
| A．for | B．in | C．to | D．with |
During the class, Tom slipped out of the classroom ____the back door so as not to be found by the teacher.
| A．across | B．in | C．by | D．beside |