You can’t avoid________your test tomorrow________you work hard today.
| A．failing；unless | B．to fail; though |
| C．failing; until | D．to lose；if |
So far this year we __________ a rapid rise in food prices by between 10 and 20 percent．
| A．experience | B．had experienced |
| C．experienced | D．have experienced |
_______ about the man wearing sunglasses during night that he was determined to follow him．
| A．So curious the detective was | B．So curious was the detective |
| C．How curious was the detective | D．How curious the detective was |
I really don’t know how to thank you , but for your help, I ______ my lost necklace．
| A．couldn’t have found | B．mustn’t have found |
| C．couldn’t find | D．wouldn’t find |
I don’t think his daughter is able to mend a computer, ________?
| A．does he | B．isn’t she | C．doesn’t he | D．is she |
__________ is often the case with her, my mother talked about my study for at least half an hour nonstop before she drove me to school yesterday．
| A．As | B．Which | C．What | D．That |