用所给单词适当形式填空,It's really relaxing--------(listen） to pop musi

用所给单词适当形式填空,It's really relaxing________(listen） to pop music in
my free time
2.different kinds of people______(be） interested in talent shows.
3.at last,the children________(sing） a cute song together yesterday.
4.the street is too________(crowd）.I can't sleep well at night.