Helen：Hi,Dzvid.I am calling (at)Sydney.
Dzvid ：Sydney?What(time)is it there?
Helen：It is 10：00pm.
Dzvid ：It is 4(o'clock) in the morning in Los Angeles.
Helen：Oh ,I forgot it.So you're in ( bed ) .Right?
Dzvid ：Yes.(What) is the (weather)there?
Helen：It's a sunny day here .(Is ) it (raining )today in Los Angeles?
Dzvid ：Yes.I always take a raincoat with me there days.
Helen：OK.I will buy a new raincoat ( for )you.Well,nice hearing you.Bye ,Dzvid
你有两个空填错了,上边是正确答案
首先,第一个,“Hi,Dzvid.I am calling (at)Sydney.”call at+地点名词,表示拜访某地（Sydney是个地名）,而你填的call in 有命令的意思；
第二个,应该是(What) is the (weather)there?
而不是“how”,因为how+形容词或副词,而what+名词（weather是不可数名词）
你不会的空：
第一个“Oh ,I forgot it.So you're in ( bed ) .Right?”
从上边一句话“It is 4(o'clock) in the morning in Los Angeles”可知时间为早晨四点钟,所以接电话的人应该还在睡觉,故用“bed”
第二个：.(Is ) it (raining )today in Los Angeles?
从下边一句话“ I always take a raincoat with me there days.”,中的单词“raincoat（雨衣）可知,
Helen问的应该是天气,Dzvid 那儿的天气是否下雨
第三个：OK.I will buy a new raincoat ( for )you.Well,nice hearing you.Bye ,Dzvid
固定句型：buy something for somebody=buy somebody something