what is还是what was

what is还是what was what's the best gift you have ever received中的what's 是what is 还是what was what happened/what was happened/what is happened/what happen/what is happeniwhat happened/what was happened/what is happened/what happen/what is happening这些用法都有吗 what is,what was能不能缩写成what's what I thought was/is +thought内容 这里是is 还是 was 英语-is?was?What day_______(be) it yesterday?应该是is还是was? What happen还是What is happen? Is there anyone know what is 还是 was the date of last Saturday?选择应该是is还是was ①what's the time?的be动词是is还是was?②what's the time?①what's the time?的be动词是is还是was?②what's the time?和what time?有什么不同?③what time能不能等于what time is it?④what day is today?能不能等于what d it is cold与it was cold问What day is it回答 It is cold还是 It was cold what was what happens what was happened what happens what is happening的区别和用法? 是what is the weather like yesterday.还是what was the weather like yesterday.还是what did the weather like yesterday? what's happened 中的“s”是has吗?还是is?还是was?还是什么?what's happened和what happened有区别吗?如果别人问what's happened应该怎么回答?问what happened又该怎么回答? What is the population of China?What was it in1949? 为什么是what was that 不是 what is that what is up 和what was up here 的区别 英语 昨天买了一个礼物 今天有人问它是什么 用what is it?还是what was it?