_________ she would have avoided the accident.
| A．She was more careful | B．If she was more careful |
| C．Had she been more careful | D．She had been more careful |
.
Through the open window we saw on the floor the happy father lying ________ his stomach, his daughter riding excitedly on his back.
| A．on | B．with | C．above | D．from |
.
The problem, according to the experts, is ________ we should do with the salty land.
| A．what | B．whether | C．how | D．that |
.
-- Has anything new been discussed on that problem so far?
-- __________ , and more will follow, I think.
| A．Little | B．Much | C．Few | D．All |
.
Our new house is very ______ for me as I can get to the office in five minutes.
| A．adaptable | B．comfortable | C．available | D．convenient |
.
When it _________ high technology, he is completely at a loss.
| A．refers to | B．comes to | C．happens to | D．speaks to |