英语翻译
1）Bell invented the telephone in 1876.(被动语态)
The telephone was invented by Bell in 1876.(被动语态)
The local newspaper interviewed him.(主动语态)
He was interviewed by the local newspaper.(被动语态)
2) The trees may be planted in spring.
The room must be kept clean.
Teenagers should be allowed to choose their own clothes.
3)English is spoken in Canada.