is one of the greatest scientists, who won the Nobel Prize for physics.
| A．Yuan Longping | B．Bisheng | C．Yang Zhenning | D．Zheng He |
—How can you keep so healthy, Ms. White?
-- I _______ eating less and playing sports after dinner every day.
A.get into B.get on with C. get used to
--Sam, come downstairs, please. I need your help.
--Sorry, Mum. I _____ on the phone.
A.talkedB. am talkingC.was talking.
You must wear strong shoes and socks ____ you climb the mountains.
A.whatever B.whereverC.whenever
Friends and neighbors become _____ when they visit each other more often.
A.farther B.closer C.stronger
—How soon can you finish the work?
---With the help of the machine, two weeks ______ enough for me.
A.is B.are C.was