—Bad luck! I the sidewalk when an Audi cut in and knocked me down.
—You can never be too careful!
| A．crossed | B．have crossed |
| C．was crossing | D．had been crossing |
He has three children, are doctors.
| A．and two of whom | B．two of them | C．two of whom | D．two of which |
Not only ,but he himself was badly beaten up.
| A．was everything he had robbed of | B．everything he had was robbed of |
| C．had everything he been robbed of | D．was he robbed of everything he had |
With nothing ________ to burn, the fire became weak and finally died out before the firefighters came.
| A．leave | B．leaving | C．left | D．to leave |
When _____ about the secret of his success, Steven gave us a smile and said nothing .
| A．asking | B．having asked | C．ask | D．asked |
—Oh, it’s you! I _____ you.
—I’ve just had my hair cut, and I'm wearing new glasses.
| A．didn’t recognize | B．hadn’t recognized |
| C．haven’t recognized | D．don’t recognize |