cứu mik nhới
1, this is the first time we have taken part in a clean-up progran
we have
2, this is the most polluted city i have visited
i have
3, no environmental issue humans have ever faced is as serious as pollution
pollution
4, they haven't hereded the cattle on pastures for weeks
it has been
5, how long ago did you start collecting coins ?
how long have
1, this is the first time we have taken part in a clean-up progran
we have never taken part in a clean-up program before.
2, this is the most polluted city i have visited
i have never visited a more polluted city than this before.
3, no environmental issue humans have ever faced is as serious as pollution
pollution is the most serious environmental issue humans have ever faced.
4, they haven't hereded the cattle on pastures for weeks
it has been weeks since they last herded the cattle on pastures.
5, how long ago did you start collecting coins ?
how long have you collected coins?