—How old is Ms Jessica?
—Don’t ask her how old she is—she’s really ______ about it.

In this section, we will briefly describe possible ways of reducing the costs and risks ______ in doing this.

The first visit to the Great Wall with my parents gave me a deep_______.

Rather than _______ on a crowded bus, he always prefers________　a bicycle．

When doing your history homework on the Civil War by typing in details to Google, a list of related books will _____.