Identify the part of the sentence that contains an error.
Our sports teacher has told us / that the class will not end / until every student will finish / five rounds of the track.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → until every student will finish
The sentence uses “will” after “until”. This is wrong. A clause of time that begins with “until”, “when”, “before” or “as soon as” uses the simple present for a future action. So it must be until every student finishes.
Option 1: Our sports teacher has told us — No error.
Option 2: that the class will not end — No error. “Will” is right here because this is the main clause, not the clause of time.
Option 3: until every student will finish — Error. “will finish” should be “finishes”.
Option 4: five rounds of the track — No error.
Corrected: Our sports teacher has told us that the class will not end until every student finishes five rounds of the track.