—Could you lend me your pen? —Of course. I have two, and ______ of them write well.

—How much of his speech did you think you understand?—_____ .I wish I had worked harder.

The information on the Internet gets around much more rapidly than ______ in the newspaper.

—Excuse me, how can I get to the South Hill? — Oh, ________ of these buses will take you there, you can only take a taxi.

It was hard for him to fit in a new class, in which ______ he was familiar with.