Almost all the main roads in the city center ______by the end of next year. ( )
A、
will be widened
B、
were widened
C、
will have been widened
D、
would be widened
【正确答案】
C
【答案解析】
解析：by the end of…意为直到……为止，一般和完成体连用。next year的出现表明本句应采用将来完成体。由于主语the main roads与动词widen为动宾关系，因此还需用被动态。答案为C。
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