Cấu Trúc Needn't / Needn't Have — Bài Tập 3

You ___ look so worried! I'm sure you passed the exam.

He ___ tried to fix the computer himself. He only made it worse and we had to call a technician in the end.

You ___ tell anyone about this. It's not a secret.

They ___ waited for us. We had our own keys.

You ___ ask for permission. Just take what you need.

I ___ bought a ticket. The event was free.

You ___ say anything. Your silence speaks volumes.

You ___ be a rocket scientist to see that this plan won't work.

You ___ think you have to be perfect. Just do your best.

He ___ bought a first-class ticket; the train was almost empty and he could have had a whole carriage to himself in standard class.