______ the fire broke out, three fire engines were rushed to the spot.
| A．Hardly | B．Quickly |
| C．Immediately | D．Gradually |
It's no use _______ so much money on clothes.
| A．spend | B．spent | C．spending | D．being spent |
. _______ his mother, the baby could not help _______.
| A．To see ；to laugh | B．Seeing ； to laugh | C．Seeing ；laughing | D．To see ；laughing |
_______ the news of his father's death, he burst into tears.
| A．After hearing | B．On hearing | C．While hearing | D．Having heard |
I searched for my wallet and it wasn't there. At first, I thought I _______ it at home. Then I remembered _______ it out to pay for the taxi.
| A．must have left；to take | B．may leave；taking |
| C．might leave； to take | D．could have left；taking |
The thief drove as fast as he could to escape ________ by the police.
| A．to be caught | B．he caught | C．being caught | D．catching |