—I'd like to wear a purple dress to the party __________ tomorrow.
—That's great! You'll be the prettiest at the party.
| A．hold |
| B．held |
| C．being held |
| D．to be held |
Mary is ill today. If she _____, she ____ here at school
| A．were not ill；would be |
| B．had been ill；wouldn't have been |
| C．were ill；should have been |
| D．hadn't been ill；could be |
All the preparations for the task _________, and we’re ready to start.
| A．complete | B．have completed |
| C．had been completed | D．have been completed |
_________as one of the most important inventions of the time, the computer helps people living in different countries to do a lot of things.
| A．Knowing | B．Known |
| C．To know | D．Know |
Anyone _______ wants to learn something can sign up for the online courses.
| A．which | B．who |
| C．whose | D．whom |
Tell Mary there is someone __________ for her at the door.
| A．wait | B．to wait |
| C．waiting | D．waited |