Not a single song__________at that party.

thecity’spublicschoolsystemshouldbeopentothechildrenofmigrantworkershasbecome the focus of discussion.

There is ________“s” and ________“f”in the word “useful” .

Mr. Smith is said to have retired and he isliving in the country now. —- Yes. He ________ in our factory for 35 years! Whata good worker!

Ordinary woman though she is, she had won the award because she tries every means to make people _________ of the importance of the environment conservation.