D...carbon dioxide is an insignificant part...
It is Present Perfect.
FORM
[has/have + past participle]
<span>Examples:
</span>You have seen that movie many times.
<span />Have you seen that movie many times?
You have not seen that movie many times.
No they do not. Both could be wrong
Answer:
False
It’s was four out of five, meaning that one didn’t agree and saying that Crest is ‘superior’ does not rule out other brands because a comparison must be done to justify this statement and the statement does not specify Crest superiority.
:)