The statement that is true for sentence that have more than one clause is that, there can be one negative word per clause. If a sentence has more than two clauses, then each clause can have one negative word. But double negatives in one clause is grammatically wrong.
The tense that shows progression or continuation of actions or states of being is : C. Progressive tense This tense usually spotted from its "to be" verb in the present tense and present participle of the verb