Question

20. He … returned from London yet. a) is not b) has not c) would not

Answer 1

20 b

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Answer 2

The correct answer is b) has not.

The sentence "He has not returned from London yet" indicates that the action of returning has not happened up to the present moment. The use of "has not" in the sentence is in the present perfect tense, which is used to describe actions that have not been completed at the time of speaking.