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PEOPLE WANT TO RESERVE THE ENVIRONMENT, BUT THEY C...
PEOPLE WANT TO RESERVE THE ENVIRONMENT, BUT THEY CANNOT HELP _____...
BAI TAP TRAC NGHIEM TA 9
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42. People want to reserve the environment, but they cannot help ____________ it. ( to pollute/ pollute/polluted/ polluting)
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42.
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BAI TAP TRAC NGHIEM TA 9