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In the early 20th century, the study of rocket propulsion was promising. which word or phrase is the subject complement in this sentence

A.rocket propulsion
B.study
C. early
D. Promising

User Moheb
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2 Answers

5 votes

The answer is promising.

User Kiranvj
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4 votes
D. Promising. Don't forget to rate and give me best answer! Then, I can help you with all your problems! ^-^ ~

User Aleadam
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