Directions: In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
1
I missed the last train (A) / which I usually catch (B) / and have to stay at the station (C) / on my way back home yesterday. (D) / No error (E)
» Explain it
C
In part C, 'have' must be replaced with 'had' to match the tense of the sentence which is simple past.

Hence, option C is correct.

 
2
I remember my childhood days (A) / when I was used to go (B) / to the farm with my father (C) / and help him in his work. (D) / No error (E)
» Explain it
B
We use 'used to' for something that happened regularly in the past but no longer happens.
 
Ex 1. I used to smoke a packet a day but I stopped two years ago.
Ex 2. Ben used to travel a lot in his job but now, since his promotion, he doesn't.
 
In part B of this sentence, 'was', hence, is not required and must be removed to make it a grammatically correct sentence.

Hence, option B is correct.
 
3
Nothing ever becomes real (A) / till it is experienced. (B) / Even a proverb is no proverb to you (C) / till your life has illustrated with it. (D) / No error (E)
» Explain it
D
In part D, the preposition 'with' is not required and hence must be removed to make it a grammatically correct sentence.

Hence, option D is correct.

 
4
You may not know it (A) / but this engine is (B) / claimed to have twice (C) / as powerful as the previous one. (D) / No error (E)
» Explain it
C
We, generally, use the verb 'have' to show possession. 
Ex. He wants to have a BMW car. 

And a 'be' verb is used while stating something about something or someone.
Ex. He is my friend. 
Ex. He claims to be the minister's nephew.

In part C, as there is no context of possession, 'have' must be replaced with 'be' to make the sentence gramatically sound and meaningful.

Hence, option C is correct.

 
5
Computers are capable of (A) / doing extreme complicated work (B) / in all branches (C) / of learning. (D) / No error (E)
» Explain it
B
In part B, as the word before 'complicated' is to add information to the adjective 'complicated', it has to be an adverb. 

The adjective 'extreme', hence, must be replaced with the adverb 'extremely' to make it a grammatically correct sentence.

Hence, option B is correct.