Grammar: Unit 4: Time to move

You .......... talk loudly in the quiet area.

During take-off, every passenger .......... wear his or her seatbelt.

You .......... sit down for the entire journey. You can get up.

Passengers .......... leave their luggage unattended.

You .......... put hand luggage in the hold. You can take it with you on the plane.

When I was small, I .......... go to bed late during the holidays.

Were you .......... book some cheap flights last summer?

They .......... board the plane if they don't have their passports.

You are not allowed to bring cameras into the museum. The sentence with the same meaning is: You .......... bring cameras into the museum.

It would be a good idea if the hotel changed the towels every day. The sentence with the same meaning is: The hotel .......... change the towels every day.

A mountain refuge is a simple place .......... hikers can stay for a night.

My cousin Talal, .......... friend is from there, told us all about the place.

They have to protect this bird, .......... is in danger of extinction.

Sydney, .......... is a popular destination for language students, is on the east coast.

The National Park, which is free to enter, closes at 10 p.m. The relative clause in this sentence is .......... .

Which sentence can leave out the relative pronoun?

Wind power is growing in popularity. It's a form of sustainable energy. The best combined sentence is ..........