The young pianist is very excited because the concert given by him has never been ________.[ ]

He looks as if he _____the answer.— He has.

There are _______ months in a year. May is the _______ month of a year.

Can those________at the back of the classroom hear me

A Cambodian boy has become famous on the Internet. When ________ about how he picked up so many languages, he said he learned them from other tourists.