One thing I am certain of is that hard work _______ good results.
| A．refers to | B．contributes to | C．sticks to | D．devotes to |
As you know, this is the day_____ the quake happened thirty years ago.
| A．that | B．for which | C．where | D．when |
---Hi , Bruce. Here is a letter for you.
--- Thanks. I wonder _____.
| A．who the letter was from | B．who was from the letter |
| C．who was the letter from | D．who from the letter was |
---Would you like _____ camping with me?
---- I ’d like to. But I’m busy _____ my homework.
| A．to go; to do | B．to go; doing |
| C．going; to do | D．going; doing |
---May I take this book out ? --- No, you _____ .
| A．can’t | B．may not |
| C．needn’t | D．aren’t |
He’s worked there since the shop opened in 1998, _____ ?
| A．isn’t he | B．hasn’t he |
| C．doesn’t he | D．wasn’t he |