If you _______ carry with you the belief that all you do is right, it’s none of my business.
| A．should | B．may | C．can | D．must |
I’ll see to _______ that all these letters will be sent to the post before twelve.
| A．it | B．me |
| C．which | D．them |
Someone is at the door. ________ must be Mr Smith.
| A．He | B．It |
| C．This | D．That |
There is only one English-Chinese dictionary in that book-shop. I wonder if you still want to buy _______.
| A．it | B．one |
| C．another | D．any |
I’ve no idea. I just pretended nobody was at home, so I didn’t ask who _______ was.
| A．he | B．that |
| C．she | D．it |
I’d prefer _______ if I didn’t have to get up early on Sundays.
| A．that | B．such |
| C．it | D．which |