it has been rained all morning. I wonder when it will stop.(有什么要更改)

It＿for three hours.When will it stop?A.has rained B.has been raining C.is raining It has been rained for 2 days.是不是对的? it has rained these days it has been rainning these days 什么区别 it (has been rained) all morning这里去掉been行不行,为什么? There has been plenty of rain these days.It has rained--- --- these day. it has been rained all morning. I wonder when it will stop.(有什么要更改) 为什么要加been?现在完成时的构成是“have（has）+过去分词 ”It has been raining for a week.为什么这里要加been?我觉得如果按照结构来的话 应该是:It has rained for a week.应为rain的过去分词是rained呀.不 英语句式问题,此句该怎么填?If the weather had been better,we could have a picnic.But it __ all day.A.rained B.rains C.has rained D.is raining应该选哪个?为什么? 1.-the weather has been very hot and dry .-yes,if it rained even a drop,things1.-the weather has been very hot and dry .-yes,if it rained even a drop,things would be much better now and my vegetables .A would not die B did not die C had not die D wou __,the football game has been decided not to be put off.A.Heavily as did it rainB.As it rained heavilyC.Heavily as it rainsD.As heavily as it could为什么?不能选B?请详细分析每个选项, 第一题 If the weather had been better ,we could have had a picnic .But it ( ) all day .A.rained B.has rained 第二题 ——If the traffic had not been so heavy ,I could have been back by 6 o'clock .——What a pity Tina ( ) here to see you .A.w It has rained nonstop for ten days...It has rained nonstop for ten days,completely___our holiday.A.to ruin B.ruined C.having ruined D.ruining为什么啊 It _ and the streets were still wet. A.had been raining B.rained C.had been rained D.would rain A:It has rained for a day.What timely rain!B___ a.so it is b.so is it c.so it has d.so has it It __ and the streets were still wet.A.rained B.has bee raining it ____ everyday so far this month.A.is raining B.rains C.has rained It has rained for three days 这个用法对吗?rain是动态动词,可以用于带‘for’的现在完成时吗?还是应该是 It rained for three daysIt has been raining for three days If it___,the match will be postponed.A has been rainedB does rain C rainsD is rained