Scientists are trying their best to _______ways to treat the terrible disease called H7N9.

Uber (优步) is the easiest way to connect you with a driver_________ the tap of a button. In terms of price and convenience, it is second _________ none.

Young drivers are far more ______ to have accidents than old drivers.

We are going to spend the Spring Festival in Guangzhou, ______ my parents and some relatives.

You will find the word “psychology” under “P” in your dictionary.