根据句意，用所给的词组填空。
how lo
ng how soon how far how often
how much how many how deep how old
1. --- __________ do you go to Beijing? --- Once a year.
2. --- __________ do you want to go to Beijing again? --- I can’t wait to.
3.--- __________ is it from Nanjing to Beijing? --- About 1,157 kilometers.
4.--- __________ have you been a League member? --- Three years.
5.--- __________ will Mr. Green come back to Beijing? --- In three years.
6.--- __________ kilos of milk was produced on the farm in 2001? --- 48,400 kilos.
7.--- __________ is the Lake, do you know? --- It’s about 1,600 meters deep, I think.
8.--- __________ was he last year? --- Ten.