- 试题详情及答案解析
- You never know how much difficulty we had ______the problem. Luckily, we managed to solve it with Mrs Wu’s help.
| A．working out | B．work out |
| C．worked out | D．to work out |
- 答案：A
- 试题分析：句意：你永远不知道我们在算出这道题有多少的困难。幸运的是，在吴夫人的帮助下，我们设法解决了困难。had difficulty doing sth,在做某事时有困难。根据句意，故选A.
考点：考查非谓语动词。