The key to exercise solutions in chapter Workbook 4 - Town and around for the textbook Performer B1, Vol. 2 with authors Marina Spiazzi, Marina Tavella e Margaret Layton from Zanichelli
Question
Correct the mistakes in the sentences.
Answer
Fred will definitely come on the sightseeing tour tomorrow if you ask him.
If the door doesn't open, it may / might / could possibly be locked.
The art gallery can't be closed, it is always open on Mondays.
I am fairly certain that I have read this book before but I'm not completely sure.
Everyone in the bus queue is really angry. The bus must be very late.
Unless Jack starts working harder, he isn't going to pass the exam.
If you get the underground at rush hour, you will find it rather crowded.