Question

somebody is keeping a ___ over the tower

Answer 1

Soap

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Answer 2

Answer:

Somebody is keeping a watch over the tower.

Explanation:

The part of speech to be used in the blank has to be a noun because there is an article before it. The most appropriate word would have been ‘eye’ which in this case means vigil.

However the article before the blank is ‘a’ and not ‘an’ so the closest synonym of keeping ‘an eye’ is keeping ‘a watch’. ‘a watch’ here refers to someone who is always observing the tower to keep track of all activities.