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English 18 Online
OpenStudy (anonymous):

Which sentence contains an error in the use of end marks or commas? A. Lt. Walker will be coming on Thursday to tell us how radar works. B. Walker, an expert on radar, will be here for about 90 minutes. C. I met him last summer in Pensacola, and we have kept in touch by writing letters. D. After his tour of duty ends he intends to work for Science Pathways Corp. <-?

OpenStudy (anonymous):

@bubbles-are-cool.

OpenStudy (anonymous):

yeah i think D.

OpenStudy (anonymous):

It is D because there should be a comma between "ends" and "he"

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