The heavy snow lasted for a week, _____ a serious traffic confusion in the whole area.
| A．causing | B．caused | C．having caused | D．being caused |
Do you know how much time and effort they devoted________ such a complicated project?
| A．to complete | B．completed | C．completing | D．to completing |
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 |
Never before________ seen a girl who can swim as fast as Ye Shiwen.
| A．had we | B．we had | C．have we | D．we have |
English is difficult________. Nobody can learn to use it in a few minutes.
| A．learning | B．to be learned | C．learned | D．to learn |
The fact that she told a lie had a great influence on her ________.
| A．ambition | B．status | C．reputation | D．assessment |