----You’re drinking too much.
----- Only at home. No one ______ me but you.
| A．is seeing | B．had seen | C．sees | D．saw |
When ______, the new railway will run for 250 miles.
| A．to complete | B．completed |
| C．being completed | D．to be completed |
It was really noisy in the workshop. Not until ______ at the top of my voice ______ to look at me.
| A．did I shout; he turned | B．had I shouted; had he turned |
| C．did I shout; did he turn | D．had I shouted; he turns |
______ the warning message, more visitors might have been trapped in the flood.
| A．Apart from | B．Regardless of | C．Other than | D．But for |
______ to sunlight for too much time will do harm to one’s skin.
| A．After exposed | B．If exposing |
| C．Having exposed | D．Being exposed |
It’s a difficult skill to master, but ______, it will benefit you for the rest of your life.
| A．once obtained | B．when to obtain |
| C．after obtaining | D．while obtaining |