8.Mistakes of this kind ________ on students’ papers.a. often appears b. often appear c. is often appeared d. are often appeared

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8.Mistakes of this kind ________ on students’ papers.a. often appears b. often appear c. is often appeared d. are often appeared
8.Mistakes of this kind ________ on students’ papers.
a. often appears b. often appear c. is often appeared d. are often appeared

8.Mistakes of this kind ________ on students’ papers.a. often appears b. often appear c. is often appeared d. are often appeared
个人认为a对
主语“这种”是单数,又appear为半系动词无被动,所以选a

b

a