If climate changes _____________, we will suffer the consequences.
A. continue
B. continuous
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It ___________ that you were given the wrong information.
A. appears
B. appearance
A different hairstyle can completely change your ___________.
A. appears
B. appearance
We only _____________ by email.
A. communicate
B. communication
The mobile phone is an effective means of _____________.
A. communicate
B. communication