- 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．worked out | B．work out |
| C．working out | D．to work out |
- 答案：C
- 试题分析：句意：你从来不知道我们在解决这个难题中有多少困难。幸运地是，我们在吴女士的帮助下成功解决了它。根据短语have difficulty doing sth.“做某事有困难”可知此处用动名词短语working out，故选C。
考点：考查动名词的用法。