I prefer ________his new idea.
A．try out B．to try out C．trying out
—Mr. Brown is a hardworking man and he has achieved great success.
—_________
A. So is Mr. Green. B. So has Mr. Green. C. It’s the same with Mr. Green.
Half of the work ______ by now.
A. has finished B. has been finished C. have been finished
—You have found your lost umbrella, haven’t you?
—Yes. I _____ it behind the door this afternoon.
A. have found B. will find C. found
—Could you tell me ________ the party?
—Next Friday.
A. where we are going to have
B. when we are going to have
C. when we were going to have
Tomorrow is the boy’s ________ birthday.
A. seventh B. seven C. seventeen