Five years ago, I (cannot, couldn't) play the piano.
Five years ago, I couldn't play the piano.
When I grow up, I (may, might) become an engineer.
When I grow up, I may become an engineer.
I think I (will, would) go to the beach this Sunday.
I think I will go to the beach this Sunday.
We have enough milk in the fridge so we (must, must not, don't need to) buy some more.
We have enough milk in the fridge so we needn't buy some more.
Could you close the door?
Sure, no problem.
We (can, could) speak English well.
We can speak English well.
(Might, May) I have a glass of water?
May I have a glass of water?
I am feeling tired. I think I (would, will) go to sleep now.
I am feeling tired. I think I will go to sleep now.
Time is not on our side. We (must, must not, don't need to) hurry.
Time is not on our side. We must hurry.
When will my package arrive (Saturday).
It should arrive by Saturday.
The volleyball team (can, could) go to the Olympics this year if they are lucky.
The volleyball team could go to the Olympics this year if they are lucky.
There is a small chance that we (may, might) go to the beach this weekend.
There is a small chance that we might go to the beach this weekend.
Mary gave me a letter to send. I (must, must not, better not) forget to mail it.
Mary gave me a letter to send. I better not forget to mail it.
Would you like to go out on a date with me? (no)
No, sorry, I'm not interested.
I (cannot, couldn't) run that fast when I was six years old.
I couldn't run that fast when I was six years old.
If you leave the stove on, the house (may, might) catch on fire.
If you leave the stove on, the house might catch on fire.
If you get in trouble, I (won't wouldn't) help you.
If you get in trouble, I won't help you.
You (must, must not, don't have to) wash those carrots. They've already been washed.
You don't have to wash those carrots. They've already been washed.
Should we leave early? (no)
No, sorry, I think we had better stay until the end.
I think I (can, could) help you learn math if you study hard.
I think I can help you learn math if you study hard.
Billy and I (may, might) cook dinner tonight.
Billy and I may cook dinner tonight.
(Will, Would) you like steak or chicken?
Would you like steak or chicken?
He will be having lessons for another two hours. We (must, must not, shouldn't) visit him now.
He will be having lessons for another two hours. We shouldn't visit him now.
Could you ride a bike as a child? (yes)
Yes, I used to ride my bike all the time as a kid.