Choose the best replacement for the words in brackets. If they are correct as they are, choose "No improvement".
He has been ill [since three days].

from three daysCorrect answerYour answerfor three daysCorrect answerYour answersince three days agoCorrect answerYour answerNo improvementCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

"Three days" is a length of time, which takes "for": "He has been ill for three days."

Worth noting

"Since" needs a starting point, such as "since Monday". "Since three days ago" mixes the two.

Concept: "For" and "since"
Typical timeTypical: 45 s
Your timeYours: —

The rule this testsThe better words for a part

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Choose the best replacement for the words in brackets. If they are correct as they are, choose "No improvement".He has been ill [since three days].

Explanation

Choose the best replacement for the words in brackets. If they are correct as they are, choose "No improvement".
He has been ill [since three days].