Not for a moment ______ that this disease was caused by certain virus.
| A．he have doubted | B．he doubts | C．did he doubt | D．he did doubt |
The town came into ______ as we turned the corner．
| A．being | B．use | C．fashion | D．sight |
We must take measures to protect the environment from ______．
| A．polluting | B．being polluted | C．polluted | D．pollute |
—Will you come with me to see a film?
—Well,________, but I will try my best．
| A．as usually | B．no way | C．not a bit | D．it depends |
With the development of high technology, more and more new things ________ to the field of IT．
| A．have introduced | B．are being introduced |
| C．were introduced | D．had been introduced |
The dog was killed by the boss of this restaurant without _______．
| A．mercy | B．move | C．shame | D．strength |