30. M
r. Keller ______ forty cigarettes a day until he gave it up.
| A．had smoked | B．smokes | C．have smoked | D．smoked |
相关试题
As we all know, it was ____ that resulted in the terrible car accident.
A. because of her carelessness B because she was careless
C. her being careless D she was so careless
Imagine life as a game ____ you are playing with five balls. You name them---work, family, health, friends and spirit.
| A．where | B．that | C．as | D．which |
If you go to Xi’ an, you’ll find the palaces more magnificent than commonly ____.
| A．supposing | B．supposed | C．to suppose | D．suppose |
While watching TV, ____.
| A．the doorbell rang | B．the doorbell rings |
| C．we heard the doorbell ring | D．we heard the doorbell rings |
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