----Do you mind if I use your bike? ----______.
When he was opening the door, he was ___________ that he was being followed by a policeman.
The teacher has a(an) ___________ to get off topic; sometimes it is difficult for students to make out what he is saying.
Can you believe? To raise an adopted dog, a young Australian even stayed single, __________ possible relationships with female students on campus!
____ David showed the report to the public surprised me.
—How much do you know about the 3D film technology? —A little. Not until _______ the hot movie Avatar _______ something about it.