Write the negative and interrogative forms of these affirmative sentences. (Viết các dạng phủ định và nghi vấn của những câu khẳng định này.) 1. Susan has to get up early. 2. Peter has to do five exercises. 3. They have to wear ties at work. 4. People have to wear masks at public places.

Write the negative and interrogative forms of these affirmative sentences. (Viết các dạng phủ định và nghi vấn của những câu khẳng định này.)

1. Susan has to get up early.

2. Peter has to do five exercises.

3. They have to wear ties at work.

4. People have to wear masks at public places.