(CEB|SHL Talent Measurement) Which one of the following sentences contains a grammatical error?
If she were honest with us, I wouldn't avoid her company.
If you had been at the party, I would have had more fun.
They wanted to go to France but were unable to afford the tickets.
My employer demands that his staff are punctual and polite.
The grass had been mown recently, so we were able to find her lost contact lens.