1 The first experiment was … (succeed), so we need to do another one
2…. (people/use) landline telephones in 2030?
3 what had you done before you …. (leave) school yesterday ?
1 The first experiment was … (succeed), so we need to do another one
2…. (people/use) landline telephones in 2030?
3 what had you done before you …. (leave) school yesterday ?
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