Listening to loud music at rock concerts ______ caused hearing loss in some teenagers.
| A．is | B．are | C．has | D．have |
She was scared _______ stay outside after dark because she was scared _______ being robbed.
| A．to; to | B．to; of | C．of; to | D．of; of |
. I don’t like such a person _______ often lies before your face.
| A．what | B．that | C．as | D．which |
_______ is known to us all that the old scientist, for _______ life was hard in the past, still works hard in his eighties.
| A．It; whom | B．As; whom | C．As; whose | D．What; whom |
They urged the students _______ the work on time.
| A．finishing | B．to finish | C．finished | D．have finished |
In the reading room, we found her _______ at a desk, with her attention _______ on a book.
| A．sitting; fixing | B．to sit; fixed | C．seating; fixing | D．seated; fixed |