i ___to get in touch with the manager for the last two hours but the line is always busy.
i ___to get in touch with the manager for the last two hours but the line is always busy.
A tried B have tried C had tried D have been trying
the answer is D,tell me why
A tried B have tried C had tried D have been trying
the answer is D,tell me why
英语人气:921 ℃时间:2020-04-12 14:46:20
优质解答
句义 在最近的两个小时里,我一直试图和经理取得联系,但总是占线.表示“从过去某时开始到现在为止一直持续做某事”应当用现在完成进行时.eg The rain has been pouring for five hours.It has been windy for a month...
我来回答
类似推荐
猜你喜欢
- 1能通过细胞滤器的----衣原体 支原体 细菌 病毒 立克次体 那些能在活细胞内繁殖**------衣原体 支原体 细菌 病毒 立克次体
- 2若a=1515…151004个15×333…32008个3,则整数a的所有数位上的数字和等于_.
- 3请问:绕线式电动机,串电阻调速怎么接线呀?有原理图吗?
- 4工房有两个连在一起的皮带轮,其中一个轮子的直径是4分米,当另一个轮子转一周时,它刚好转3圈,另一个轮子
- 5I always wanted to have this feeling,because you may think of you.
- 6a-²b-³*(-3a-1次方b-²)÷6a-4次方b-²
- 7硅藻土作为助滤剂的原理?
- 8有理数加减混合运算练习
- 9Hgo→Hg+o2配平方法
- 10什么是真正的美?请谈谈你对美的理解.