________ confidence in yourself is the biggest barrier _______ greater progress in your work.
| A．Lacking of; to making | B．Lack of; to make |
| C．Lack of; to making | D．The lack of; to make |
Tom's mother kept telling him that he should work harder, but ______didn't help．
| A．he | B．which | C．it | D．one |
As Susan stared at ______ piles of plastic in her recycling bin, ______ strong sense of responsibility made her stick to her recycling work.
| A．不填；不填 | B．不填; a | C．the ; a | D．the; the |
—Fancy meeting you here at this time!
—
| A．Glad to see you. | B．It's a small world |
| C．So did I. | D．Oh, haven't you? |
Americans believe in the ideal, as ______ in their Declaration of Independence, that all men are created equal.
| A．stated | B．assumed | C．held | D．possessed |
When Helen saw his tutor nod ________ to her, she calmed down and went on with her performance.
| A．encouragingly | B．amazingly | C．interestingly | D．astonishingly |