Thousands of years ago people discovered the phenomenon by chance, and this was _____ the idea of the compass first came from.
| A．how | B．what | C．where | D．that |
_____ the big snake, the little girl stood under the tree _____ to death.
| A．Seeing; frightened | B．Seeing; frightening | C．Seen; frighten | D．To see; frightening |
_____ as the most excellent student in her university, as most classmates had expected, made her parents very happy.
| A．Mary was chosen | B．Mary chosen | C．Mary being chosen | D．Mary’s being chosen |
At no time does the salesgirl get up late in the morning, for she is always too busy _____ a good rest.
| A．to take | B．taking | C．took | D．taken |
It was _____ computer games that cost the boy a lot of time that he ought to have spent on his lessons.
| A．to have played | B．playing | C．played | D．having played |
_____ he’s only been learning English for a year, he speaks it very well.
| A．Considered | B．Considering | C．Having considered | D．To consider |