can - will - should - must
1. I (reply) to your email soon. 
2. I believe you (win) the game. 
3. You (wear) uniform when you go to school. 
4. He  (pick) me up tomorrow. 
5. You (see) the doctor if you don't get better. 
6. So sorry but I (not join) the party. 
7. There are many children in the room so you (not smoke) here. 
8. You (be) quiet while the teacher is explaining the lesson. 
9. You (bring) some gifts when visiting someone's house for the first time. 
10. John (not go) to school next week because he will return to his hometown.

1. They (be) going to the cinema now. 
2. She (do) the laundry with her mom every day. 
3. They (not watch) this type of movie.
4. My father will (build) a new house that is bigger than our current one.
5. My friends and I (try) to wake up early to watch the sunrise.  
6.  I am (do) the homework. 
7.  You (forget) to turn off the light before leaving yesterday.
8.  Anna wants (hang) out but her friends are busy. 
9.  My brother (be) practicing the guitar this time yesterday.
10.  I (not know) how to do that.