I regretted _________ a lecture made by proffessor. Wu.
| A．missing | B．to | C．miss | D．missed |
______ different life today is from ______ it was fifty years ago.
| A．What a; what | B．What a; how | C．How; what | D．What; what |
The driver was at ______ loss when ______ word came that he was forbidden to drive for speeding.
| A．the ; the | B．a ; / | C．/; / | D．a ; the |
You can take the rest of the pie with you. ________, I wish you would, since I’m on a diet.
| A．On the other hand | B．As a matter of fact |
| C．As a consequence | D．In addition to it |
With the word “ PM2.5” ________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
| A．constantly | B．consequently | C．permanently | D．immediately |
He is talking so much about America as if he _____ there.
| A．has gone | B．has been | C．was | D．had been |