问题描述：
When you ___ at the station,give me a ring and then I'll come and fetch you in my car.
Please explain among (1),(2),(3),(4),and(5) in mandarin.
Please choose from following sentence as below.
1)have arrived
2)arrived
3)arrive
4)will arrive
5)would arrive
Please explain among (1),(2),(3),(4),and(5) in mandarin.
Please choose from following sentence as below.
1)have arrived
2)arrived
3)arrive
4)will arrive
5)would arrive
问题解答：
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