—Have you finished your book report?
—Not yet. I couldn't________on it with so loud music next door last night.
| A．draw | B．devote | C．direct | D．concentrate |
Don’t turn on the radio __________ your mother allows you.
| A．unless | B．because |
| C．if | D．and |
The room ___________ window is open is mine.
| A．which | B．its | C．that | D．whose |
My mother insist________ sending me to the hospital.
| A．of | B．on | C．in | D．about |
Shanghai is the city ______ he was born.
| A．what | B．where | C．when | D．which |
Over 300 students from China______ her class every year.
| A．attend | B．run |
| C．exchange | D．approve |