16．—In London, dogs and their owners can enjoy hourlong free bus tour.
—Wow! I hope we can also have such a service in Dongying.
A．a B．an C．/ D．the
17．Frenchmen are outgoing. It is to make friends with them.
A．easy B．proud C．polite D．important
18．—I'm worried about our talent show tomorrow.
—Be confident(自信的)！If you don't believe in yourself, will.
A．nobody B．anybody C．everybody D．somebody
