The light in his office is out. He_________ left for home.
| A．must have | B．must have been | C．should have | D．should have been |
I have got _______ good news for you．You are to change _______ trains in Changsha and take _______ fast one.
| A．/; /; a | B．a; /; a | C．a; the; the | D．/; the; a |
As hiring _______ more global, both for employers and candidates, video interviewing is a way to speed up the interview process.
| A．became | B．has become |
| C．will become | D．had become |
—What should I wear to attend his wedding party?
—Dress ____ you like.
| A．what | B．however | C．whatever | D．how |
Losing weight may not be just about what you eatwhen you eat it, according to a new study．
| A．so | B．and | C．but | D．for |
This problem may lead to more serious ones if ____ unsolved.