Вставить must или have to.
1. I mustn't tell about it. I __ tell it. I __ tell it.
2. Must he go to the library? Did he __ go to the library? __ go to the library?
3. A knight must be brave. A knight __ be brave. This knight __ be brave.
4. We must sign this agreement. We __ sign this agreement.
5. Jessica must take part in the dance competition. Jessica __ take part in the dance competition. Jessica __ take part in the dance comoetition.
I have to tell it. 2. have to, must
3.must, must
4.must
5. have to, have to