Question

Fill in the blanks with appropriate word The river abounds ______ fish

Answer 1

The river abounds WITH fish

Answer 2

The river abounds with fish.

Explanation:  

• In the sentence the line means is that the river is filled with fishes. The fishes fills the river hence the word, that goes after abound is with.  

• With here is a used as a preposition, the noun here is the fishes in the river. The verb after which it is included is abounds.  

• The words in, between etc. are not appropriate since the word 'abounds' does not go with these words. Some words like 'is filled' can be used which also goes with the word 'with'.