We were swimming in the river ____ suddenly the rain started.为什么用when,不用before?

While we were swimming in the river,改为(　)（　）in the river. We were swimming in the river ____ suddenly the rain started.为什么用when,不用before? 英语求助We were swimming in the lake ____ suddenly the storm started. When we were children,we --- swimming together every day in summer Ago Bwent Cwill go Dwere going要理由 We were swimming in the river ____ suddenly the rain started.为什么这里填when不可以while? while we were swimming in the river,we saw a fish jump out of the water=__in the river,we saw a We can e____ swimming in summer _____ we were swimming in the river,we saw a fish jump out of the river.A.When B.While 请问到底选哪个?为什么? We were swimming in the lake___suddenly the storm started.填before为什么不行?在风暴突然开始之前我们一直在游泳 我要问一道题We were swimming in the lake -----suddenly the storm startedA.when B.while C.until D.before请给个详细解答 they were swimming in the swimming-pool form 8 to 10 yesterday（改成一般疑问句） We ofter ()(swim)in the swimming pool in summer. We enjoy swimming in hot weather in the swimming pool.对hot提问. we often go swimming in summer.改写成第三人称he We often go swimming in summer.(改写成第三人称He) We often go swimming in summer改写成第三人称 in summer we often go swimming p-- near here we can see some fish swimming in the （p ）.