Alice explains things very well, what she says can be understood very ＿＿＿.

What do you think of the four classics (名著)of China?－I hear that they are wonderful, but I’ve read _______ of them.

Do you know the song Gangnam Style? —Of course. It interesting.

My friend ______ from the UK. She studied at Oxford for four years, during which we communicated with each other on the Internet.

Is your jacket? —No, it isn’t. Ask Alan. He lost .