问题

MrSmith is one of the foreign experts who ___________in China
A:works
B:is working
C:are working
D:has been working
B:is working
C:are working
D:has been working
正确答案是:
同类题型
“Let’s _______ the talking,” Johnny said, “And get back to work”.
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Mr. Ma has gone to Guangzhou on business.—Really Do you know
The mother often makes the boy ____ his homework before supper.