______all the homework assigned by the school the students have to work at it till midnight
| A．Completing | B．To complete | C．Having completed | D．To have completed |
— The food here is nice enough.
— My friend ______ me a right place.
| A．introduces | B．introduced | C．had introduced | D．was introducing |
The way the guests ___ in the hotel influenced their evaluation of the service.
| A．treated | B．were treated | C．would treat | D．would be treated |
Scientists have many theories about how the universe ___ into being.
| A．came | B．was coming |
C．had come | D．would come |
According to the art dealer, the painting ______ to go for at least a million dollars.
| A．is expected | B．expects | C．expected | D．is expecting |
Susan decided not to work on the program at home because she didn’t’ want her parents to know what she __________.
| A．has done | B．had done | C．was doing | D．is doing |