27. The reason why Daisy eats so little is that she is _________ a diet and she is trying to _______ weight.
| A．on; put on | B．on; lose | C．in; reduce | D．in; put down |
Everyone in this country should work hard and do what they can _____ against national smog.
| A．fight | B．fought | C．fighting | D．to fight |
It isn't just big data specialists like data scientists and statisticians ______ to benefit from this boom of big data opportunities.
| A．who stands | B．that stand | C．which stands | D．when stand |
—Why are you crying? Today is your birthday!
—____________. I am so excited with so many friends surrounding me.
| A．Just can’t help it | B．Don’t mention it |
| C．None of your business | D．That’s all right |
I have been staying up until midnight since Monday, working on my paper. I need to ______ some sleep this weekend.
| A．catch up on | B．live up to | C．get along with | D．make sense of |
My father _____ Japan in a few days. Do you know when the earliest plane _____?
| A．leaves; takes off | B．is leaving; is going to take off |
| C．is leaving; takes off | D．leaves; is taking off |