The girl is singing an English song in the next room is Tom’s sister.
| A．whom | B．which | C．whose | D．who |
I have to reschedule the appointment with you since there is a ______ in my arrangement.
| A．contract | B．contrast | C．connection | D．conflict |
You will have to stay at home all day ______ you finish all your homework.
| A．if | B．unless | C．whether | D．because |
He works very hard in order to get himself ______ into a key university.
| A．accepted | B．received | C．announced | D．admitted |
--- Could we accomplish the task according to the schedule?
--- I doubt that. The problem remains ______ we can get financial aid within this week.
| A．that | B．how | C．why | D．when |
If you want to see Mr. Johnson on Friday morning, make sure he is ______ ahead of time.
| A．approachable | B．accessible | C．available | D．convenient |