—The 6,845-meter-long subsea tunnel(海底隧道) of Shenzhen-Zhongshan Bridge has closed up on June 11th,2023.
—Yes.The builders of it have tried their best ________ the super project.( )
【考點(diǎn)】動(dòng)詞不定式的一般式.
【答案】C
【解答】
【點(diǎn)評(píng)】
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