1. Have you taught him how to operate that new machine
-> Has _
2. Since the 1980s, people have recycled more and more paper
-> Since 1980s, _

Question

1. Have you taught him how to operate that new machine  -> Has _  2. Since the 1980s, people have recycled more and more paper  -> Since 1980s, _

quynhnhu · Answer

=>   1. Has he been taught how to operate that new machine?   2.  Since 1980s, more and more paper has been recycled.

nhanlinh · Answer

1. Has he been taught how to operate that new machine?   2.  Since 1980s, more and more paper has been recycled.

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