Choose the correct answer

We ...... cook tonight. Cindy has invited us to dinner at her place.

• must have
• don't have to
• have to

She doesn't work here anymore, ......?

• is she
• doesn't she
• does she

You ...... to come with me. I can't go there on my own.

• have
• must
• should

We've ...... a wonderful new car.

• buy
• bought
• buying

You ...... study hard if you want to go to university.

• have
• must
• need

You couldn't lend me £10 till the end of the week, ......?

• did you
• could you
• will you

I've been ...... about you all day.

• think
• thought
• thinking

Do I really ...... do my homework?

• have to
• must
• should

We ...... stop polluting the environment.

• don't have
• have not
• have to

They have been ...... up litter all morning.

• pick
• picking
• picks