Direction: In the following questions, a part of the sentence is printed in bold. Below are given alternatives to the bold part at 1, 2, and 3 which may improve the sentence. Choose the correct alternative. In case "no improvement" is needed, your answer is ‘4’.

Because the enemy had a reputation for engaging in sneak attacks we were frequently on the alert.

Options

A. occasionally
B. inevitably
C. constantly
D. No Improvement

Answer

C

Explanation

(3) constantly (Adv.) : all the time, repeatedly
sneak (Verb) : to go somewhere secretly, trying to avoid being seen
frequently (Adv.): often
occasionally (Adv.) : sometimes but not often
Here, constantly is the right usage.