Nothing that you say can change his mind, ________？
| A．do you | B．don't you |
| C．can it | D．can't it |
—Could you mail these letters for me please?
—_____ letters? Your friends are going to be very happy to hear from you again.
| A．Some | B．Which | C．Different | D．More |
Everyone has a form in his hand, but no one knows which office ___.
| A．to have it sent | B．to send it | C．to send it to | D．to be sent to |
He did poorly in the exams, ___ how hard he tried for them.
| A．to consider | B．considering | C．to regard | D．regarding |
There are many valuable services which the public are willing to pay ___, but which __ not bring a return in money to the community.
| A．to; do | B．不填；does | C．for; does | D．for; do |
. In no country other than Britain, it has been said, ____ experience for seasons in the course of a single day.
| A．you can | B．people can | C．can one | D．can it |