'Few' is the correct option. 'They are not enough' conveys the negativity. 'A few' is incorrect because it is imparting a positive sentiment to the sentence while the following sentence is negative. 'The' is incorrect because there is no need to point out the noun in the sentence.

 'any' is the correct option as it provides negative sentiment to the sentence. 'some', on the other hand provides positive sentiment to the sentence. 'little' is incorrect because we have already used a negative (not) in the sentence. 

 'this' is the correct option. 'which' and 'where' are incorrect because the sentence is not an interrogative. Hence, these two options do not fit in.

   'This' is the correct option as it is demonstrating a particular place. 'These' is incorrect because it is used to refer to plural items. 'Them' is incorrect because it is the objective form.

 'This' is the correct option as it refers to singular items. 'Those' and 'These' are incorrect as they refer to plural items.

 'much' is the correct option. 'a little' is incorrect because it would induce double negation in the sentence. 'some' is incorrect because it will provide a positive sentiment to an already negative sentence.

 'any' is the best option. 'some' and 'much' are incorrect because they give positive sentiment to the sentence where negation (not) has been placed before.

 'my' is the best option because it is showing a sentiment of possession on the noun (purse). 'a' is incorrect because 'purse' is a definite noun in the sentence.

'Llittle' is the correct option. 'A little' is incorrect because it is giving a positive tone to the sentence while the sentence preceding it has a negative sentiment. 'The little' is incorrect because there is no definite noun in the sentence to be pointed.

 'Those' is the correct option. 'There' is incorrect because a physical location is not referred to in the sentence. 'This' is incorrect because it refers to singular items.

 'This' is the correct option. 'These' is incorrect as it is used to refer to plurals. 'It' is a pronoun and does not fit in the sentence as there is no antecedent for it.

 'a' is the correct option because the noun 'movie' is indefinite.

'a' is the correct option because it is pointing out a noun (letter) which is indefinite. 

'some' is the correct option. 'few' is incorrect because vegetables are measured in quantity, not number. 'any' is incorrect because it is used for negative assertive sentences.  

 'a' is the correct option because it is pointing out to an indefinite noun.