write 4 sentenses using must

a. She must drink because the weather is very hot.
b. You got the good mark in the exams. Your parents must be happy to hear that.
c. You must use the umbrella to go to school because it was rainy. 
d.We must get up in the morning.

Semoga membantu ^-^

1. We must answer the letter at once.

2.They must finish the work on time.

3. Passengers must not smoke in the bus

4. She must invite her parents in Lampung.