—Would you like _______  cake?     —No, thanks. I’m full(饱的).

We have two kinds of summer camps for your holidays. You can choose ______ based on your own interests.

—What do you think of the 2013 Spring Festival Party?—Well，great！But I don’t think much of ________ held last year.

Of all the books on the desk,    is of any use for our safety．

The American people will never forget the 9.11 event and the psychological trauma __________ caused to hundreds of thousands of common households.