题目内容
Since the old lady fell, she's been ________ steps.
- A.able to go up
- B.unable to go up
- C.unable going up
- D.able not to go up
B
练习册系列答案
相关题目
My colleague has been recovering gradually since the operation, and it wont’ be long ______ he comes back to work.
A.before |
B.since |
C.after |
D.when |