Complete the sentence by selecting the most appropriate word/phrase from the given options. 'He is sanguine about a situation' means he is a:

Complete the sentence by selecting the most appropriate word/phrase from the given options. The earth is at present in great danger of becoming uninhabitable because of ......... environmental pollution which is going on at an incredible rapid pace.

Complete the sentence by selecting the most appropriate word/phrase from the given options. The apples in the vineyard were .......... enough to be picked.

Complete the sentence by selecting the most appropriate word/phrase from the given options. $I$ was surprised at his ............. lack of knowledge about the Continent of Asia.

Complete the sentence by selecting the most appropriate word/phrase from the given options. The new education policy offered a ................. for the social activists to remove illiteracy.

Complete the sentence by selecting the most appropriate word/phrase from the given options. Ambition is one of those ......... which are never satisfied.