下列加点字的注音正确的一项是

The scientist __________ the experiment forhalf a year, but he _______ yet.

What kind of music do you like best?-I like the music ___________ is quiet and gentle.[ ]

I’m sorry, but I don’t quite follow youDid you say you wanted to return on September 20?—Sorry, I ______ myself clearWe want to return on October 20

…Do you have anything to say for yourselves? …Yes, there is one point _______ we must insist on.