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МатематикаВопрос:
If we don't ____ them, many species will disappear. a- help b- helped
Ответ:
Solution:
- The sentence is in the present tense, and the auxiliary verb 'don't' is followed by the base form of the verb. 'Help' is the base form, while 'helped' is the past tense.
Answer: a- help
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