I said hello to you in the street yesterday, but you ________ me completely.—I'm sorry. Maybe I didn't notice you.
, and the problem will be worked out.
I knew that _____ would ever discourage him; he would never give up wanting to be a director.
In communication, a smile is usually __________ strong sign of a friendly and _______ open attitude.
—Could I ask you some personal questions? —
We should consider the students’ request _____the school library provide more books on popular science.