Which of the following sentences is correct?

Pick out the part of the sentence which has an error. If there is no error, mark ‘4’.
A) As I haven't see all the evidence.
B) I am reluctant
C) to make a judgement

Fill in the blanks by proper word in the sentence.

'He was frightened ______.'

Pick out the correct sentence from the following sentences.

Fill in the blank with a suitable word.

There are more things in heaven and earth ________ are dreamt of in our philosophy

In the following sentence, find out which part of the sentence has an error and select the appropriate option:

"The patient died / despite he had received / the best medical help / from the hospital staff."

Identify the error in the sentence given below:

1. Education is a instrument / 2. which imparts knowledge and / 3. therefore indirectly controls power / 4. and narratives.