______ the project in time, the staff were working at weekends.
| A．Competing | B．Having completed | C．To have completed | D．To complete |
—Could you be so kind as to close the window?—______.
| A．With pleasure | B．Go ahead | C．Yes, please | D．That’s OK |
News came from the school office ______ Wang Lin had been admitted to Beijing University.
A which B what C that D where
When I said someone cheated in the English exam, I ______ you.
| A．wasn’t referring to | B．had referred to | C．hasn’t referred to | D．will refer to |
The road is covered with ice. I can’t understand they insist on going by bike.
| A．why | B．when | C．how | D．whether |
______ the employees’ working efficiency, the supervisor will allow them to have a coffee
break.
| A．Improving | B．To improve | C．Having improved | D．Improved |