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

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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
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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
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

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
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.
其余三个选项的时态均不符合要求.

for two hours表示一段时间
所以排除A
通过语境必然不会是过去的过去所以排除C
主要考虑B.D根据题目意思我们知道主人公一直在打电话而且带有抱怨情绪
所以用have been doing表示一直进行且带埋怨色彩

最好这样说：The answer is D. Could anyone tell me why? Thanks.

i'll get in touch with get in touch with 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 How can I get in touch with you? How can I get in touch with you thanks. get in touch with sb Get in touch 中文是什么意思 i can`t r_____ his telephone number.how can i get in touch with him? be in touch with 与keep in touch with与get in touch with区别 _（由于找不到他的地址）,i couldn't get in touch with him. lawmake,get in touch with是什么意思 get in touch 的中文意思 o.k.get in touch中文是什么意思 I will be in touch . get in touch with sb, 小问题.get in touch with 是固定短语,能不能把这里的get看做不及物动词?2.I asked her to get in touch with Henry as soon as possible.我要求她尽快与亨利联系.这句里get in touch with 能不能换成 I will be in touch on Monday,in touch I'm in touch如何翻译? i will be back in touch,