1. have
I've always wondered what it'd be like to have siblings.
What's going on in the cave? I'm curious. "I have no idea."
Democracy is the worst form of government, except all the others that have been tried.
If two men always have the same opinion, one of them is unnecessary.
I have hiccups.
I entered the museum through the wrong gate. I should have been more careful.
I have a hard time seeing the logic of this latest decision of his. He just isn't as sharp as he used to be.
Wrinkles should merely indicate where smiles have been.
Those who choose not to read have no advantage over those who can't read.
He has collected twice as many stamps as I have.
More and more women have their own careers and are economically independent of their husbands.
Men and women between the ages of 25 and 54 have the most stressful lives.
We have a new puppy. He is about 12 weeks old.
By the end of the century, the earth will have experienced a dramatic increase in temperature.
We currently have 200 well organized sales offices all over Japan.
2. must
I must go.
Now that he has graduated, he must become more serious.
All the delegates knew they must discuss it.
I will go if I must.
You lean on your parents too much. You must be more independent.
His doctoral thesis must be submitted to the professor by the end of the month.
The checked player must find a way for the king to escape and block the check.
I must have tried on everything in the shop, but nothing looked right on me.
Must we dress up?
Even if it costs 10,000 yen, I must buy the dictionary.
In order to qualify for the homestay you must have an interview with the sponsors.
It's already ten o'clock. My mother must be angry.
Under no circumstances must you leave the room.
What a good scholar the author must be to write such a splendid book!
In cold weather we must be sure to keep our bodies warm.