Atlanta, as well as many other big cities, once again becoming one of the commercial and cultural centers of the USA right now.
| A．is | B．are | C．has been | D．have been |
In face of difficulties the climbers______in the hope of reaching the top before dark.
| A．insisted on | B．looked up | C．turned away | D．kept on |
Those were the graduate assistants ______ to do the research work in the lab.
| A．to whom it was their responsibility | B．whose responsibility there was |
| C．whose responsibility was | D．of whom with the responsibility |
It was dark in the cave so she ______ a match.
| A．struck | B．hit | C．fired | D．burned |
. ______ me most was that the young boy who had lost both arms in an accident could handle a pen with his feet.
| A．That amazed | B．It amazed | C．Which amazed | D．What amazed |
It is quite common for a working man to make ______ for his old age by putting aside enough money to live on.
| A．adjustment | B．supply | C．assurance | D．provision |