18. In the past two weeks,_________a fistfight and a rubbery in the walkway near the elementary school.(A) there are (B) there was (C) there have been (D) there have

20. Which of the following sentences is error-free, based on standard written English?(A) Canadian Prime Minister Trudeau went into a long silence before responding a journalist's question about President Trump's handling of George Floyd protests.(B) We suggested, at the meeting, that the government conduct a survey of the issue to find out about the residents' opinions.(C) Sarah finally decided to serve the ice cream to her guests that she had been keeping in the refrigerator.(D) To celebrate my sixtieth birthday, I have decided to buy me the red car the BMW dealer showed me the other day.

18. In the past two weeks,_________a fistfight and a rubbery in the walkway near the elementary school.

(A) there are
(B) there was
(C) there have been
(D) there have

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