a single world can change the meaning of a sentence, a single sentence can change the meaning of a paragraph.
| A． | Just as | B． | Even though |
| C． | Until | D． | Unless |
—Excuse me, but I want to use your computer to type a report.
—You _____ have my computer if you don’t take care of it.
| A．shan’t | B．might not | C．needn’t | D．shouldn’t |
_____, Carolina couldn’t get the door open.
| A．Try as she might | B．As she might try |
| C．She might as try | D．Might she as try |
So absorbed _____ in her work that she didn’t realize I was behind her.
| A．did she | B．was she | C．she did | D．she was |
_____, we would go on a picnic.
| A．The weather is fine | B．Should the weather be fine |
| C．The weather be fine | D．Would the weather be fine |
_____ time, he’ll make a first-class tennis player.
| A．Having given | B．To give | C．Giving | D．Given |