What do you think of the 3-D printer—It’s great although it still needs further .

.__________having hundreds of online “friends” is great, our real and closest connections still lie with those who are a part of our daily lives

Professor Smith, can I meet you at 10 o’clock tomorrow morning?—Oh, I’m sorryI a lecture at Hunan Normal University

It was necessary to _____ the factory building as the company was doing more and more business.

I think the director’s attitude ________ this program will decide what we should do next