10. - Can you show me your headmaster's office? -_____But I don't know if he is in at the moment.A. Go ahead B. You're welcome c. Of course not D. Sure
---When did you see the bird last night? ---It was at about ten thirty ______ I got home.
—What about ______ lecture you attended yesterday? —To tell the truth, it was too boring. I can’t stand ______ lecture like that.
—I’m afraid I can’t afford a ticket to the concert, so I won’t be able to go with you. —Don’t worry. It’s my ________.
—Hi, Li Xiaoxia. What a surprise! Dad _____ you _______ so early. He’s upstairs reading. I’ll just call him.
—Where is Lu Wenjie? —I have no idea.He__________ be in the library.