—Can I call on her next week ?
— Yes，if ______ .
| A．you are convenient | B．you will be convenient |
| C．it is convenient to you | D．it will be convenient to you |
----This is your order, a hamburger and an apple pie ____?
| A．Anything else | B．Is that OK |
| C．For here or to go | D．Something to drink |
I’m calling about the apartment you __the other day. Could you tell me more about it?
| A．advertised | B．had advertised | C．are advertising | D．will advertise |
It’s much easier to make friends____ you have similar interests.
| A．unless | B． when | C．even though | D．so that |
Before you pay a visit to a place of interest, look in your local library _a book about it.
| A．on | B． at | C． for | D．to |
From space, the earth looks blue. This is ____about seventy-one percent of its surface is covered by water.
| A． why | B． how | C． because | D． whether |