Question
The team was divided into groups, each of which have to
complete their own tasks. The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find  any error, mark ‘No error’ as your answer.Solution
The correct verb form should be "has to complete" to agree with the singular subject "each of which" in the relative clause. Thus, the correct sentence is: "The team was divided into groups, each of which has to complete their own tasks."
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