—You seem busy these days.—Yes. I’m looking for a house. It’s really not easy to find _____ with four bedrooms.
—May I speak to your manager Mr.Williams at five o’clock tonight? —I’m sorry. Mr. Williams ________ to a conference long before then.
We_______onitforseveralhoursbutwehavenotyetreachedanyconclusion.
I ____ to go for a walk, but someone called and I couldn’t get away.
Salley________Beijing for Shanghai and________there ever since. You can go and pay her a visit on your way to Hangzhou.
A new technique ____ out, the yields (收成) increased by 20% .