Ⅰ.根据句意用适当的情态动词填空
1．He is a native speaker of Japanese, so he can communicate with them in Japanese freely.
2．My father proudly said that I could speak at the age of ten months.
3．On winter evenings of those days, we would sit around the fire and chat happily.
4．I parked my bike behind the building, but now it is gone. It must have been stolen.
5．You mustn't leave the little boy alone at home. He is too young.
6．It is strange that the mean man should give away all his money to those orphans.
