Tom’s uncle knows computers well, and he __________ a computer engineer .
A．maybe B．may be C．may be is D．may is
B
【详解】
句意：汤姆的叔叔非常熟悉电脑，他可能是一名电脑工程师。
考查情态动词，A.副词，可能；B.可能是；C.没有这种形式；D.没有这种形式。and连接的并列句缺少谓语/系动词，may为情态动词，后接动词原形。故选B。
请根据句意从方框中选择合适的动词,并用其适当时态填空,使句子通顺
| nod achieve cheer control prepare |
56．The 20-month old baby ________ with a smile when she saw her mother back from work.
57．Peter with his classmates always ________ for their school football team while watching football matches.
58．Step into 2020, near 2021, China ________ the goal of building a well-off society in an all-round way.
59．—You seemed busy when I walked past. Have you got a minute now, sir?
— Sure.I ________ a report It's finished. So, what's up?
60．The Chinese government ________ the virus through the efforts and now people can go to work,students can go to school as usual
