engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 English Grammar Sentence
Select the option that will improve the underlined part of the sentence. In case no improvement is needed, select ‘No improvement’.
Ram and his friend have been working on it since two hours.
1
from two hours
2
for two hours
3
until two hours
4
No Improvement