英语翻译①他问我近来是否收到汤姆的来信.②当我到达车站的时候,六路车刚刚离开.③到上个月末,他们已经上了四节钢琴课.④你

He asked me whether I had heard from Tom recently。Bye the time I arrived at the bus station the No。6 drove away。They had had four piano classes by the end of last month。How long have you worked in Beijing before you came to Weihai?We have already learned 2000 English words so far。Great changes has take place in Weihai in the past 60 years。By the time he got up,his mother has went to the market。He have been sick for more than a month by the time she was sent to the hospital。My uncle's car broke down by the time he drove on road。Xiaohong picked me up to the museum yesterday。