It seems that we __________ polluting the planet until it ...

★ Relative Clauses and etc

It seems that we __________ polluting the planet until it is too late.

A. aren’t stopping

B. don’t stop

C. will stop

D. won’t stop

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‘__________ the invitations to the party out yet?’

‘Yes, I did it last week.’

A. Has she sent

B. Have you been sending

C. Are you sending

D. Have you sent