______ for two days, Steve managed to finish his report on schedule.
| A．To work | B．Worked |
| C．To be working | D．Having worked |
Try not to start every sentence with “the”. _____ the beginnings of your sentences.
| A．Vary | B．Decorate | C．Form | D．Describe |
Sugar is not an important element in bread , but flour is .
| A．unique | B．essential | C．natural | D．adequate |
The president has told his friends that he is sick but will not admit it _____.
| A．in private | B．in secret | C．in public | D．in detail |
Walking down the street, she noticed a long _____ of houses, all exactly alike.
| A．queue | B．rank | C．train | D．row |
When the teacher told the boy to sit down, he _____ to her and said she couldn’t make him.
| A．gave way | B．talked back | C．looked up | D．got down |