Upper Unit 3

We’re going away for a week. How many T-shirts do you think I must / should pack?

• must

• should

Tourists have to / ought to take their passports with them on the trip because, otherwise, they won’t be allowed to cross the border.

• have to

• ought to

You aren’t supposed to / needn’t bring cups of coffee into the meeting room. It’s OK this time, but don’t do it again.

• aren't supposed to

• needn't

The great thing about Sundays is that I don’t have to / mustn’t get up early. I can lie in bed all morning.

• don't have to

• mustn't

You needn’t / mustn’t wear flip-flops or sandals on the mountain hike. Wear good, strong walking shoes.

• needn't

• mustn't

I am a tour rep and I ought to / am supposed to wear a uniform in my job. That’s because I am representing my company’s values.

• ought to

• am supposed to

Trevor can / may / might be able to come with us on the trip after all.

• can

• may

• might

Obviously, I can’t know for sure, but since she left so early, Susie should / must / could get to the hotel before us.

• should

• must

• could

Be careful. The weather can / could / must be really warm in North Africa at that time of year.

• can

• could

• must

This key must / can / should work. I had it cut specially this morning.

• must

• can

• should