问题描述：
| — The new equipment has brought us a lot of convenience . — Yes. It is _____. |
| [ ] |
| A. usable B. out of use C. in much use D. of much use |
考点提示：形容词,介词和介词短语
最佳答案： | D |
— The new equipment has brought us a lot of convenience .— Yes. It is _____. [ ]A. usable B. out of
— The new equipment has brought us a lot of convenience .— Yes. It is _____. [ ]A. usable B. out of
最佳答案： 