As Mary ______ a poem, her little sister ______ asleep.
| A．was reading, has fallen | B．was reading, was falling |
| C．was reading, fell | D．read, was falling |
---Alice, you look puzzled, Have you understood it?
---No．I _____another problem just now．
| A．l have thought of | B．am thinking of |
| C．had thought of | D．was thinking of |
How pleased the detective was _____what his customer told him!
| A．hearing | B．to hear | C．heard | D．to hearing |
She looks forward every spring to _____the flower-lined garden．
| A．walking in | B．walk in | C．visit | D．paying a visit |
_____ all his followers dead, the captain was taken by his enemy．
| A．For | B．As | C．Because of | D．With |
_____to his research work, the professor cared little about any other things．
| A．Devoting | B．Devoted | C．Having devoted | D．To devote |