Common Error Detection - Study Mode

[#146] Find out whether there is any grammatical error in below sentence. He managed to make sense of the book / even though it was the first time / he read anything on the subject.
Correct Answer

(C) he read anything on the subject

Explanation

Solution: when he read anything on the subject

[#147] Find out whether there is any grammatical error in below sentence. She reluctantly said that / if nobody else was doing it / she will do it.
Correct Answer

(C) she will do it

Explanation

Solution: she would do it

[#148] Find out whether there is any grammatical error in below sentence. I fail to understand / why he replied in negative / when the proposal was in his favour.
Correct Answer

(A) I fail to understand

Explanation

Solution: I failed to understand

[#149] Find out whether there is any grammatical error in below sentence. I have / an appointment / on the 9th September on five o'clock
Correct Answer

(C) on the 9th September on five o'clock

Explanation

Solution: on the 9th September at five o'clock

[#150] Find out whether there is any grammatical error in below sentence. Immediately after boarding the bus, / Mahesh asked the conductor / that if he knew / where the museum was.
Correct Answer

(C) that if he knew

Explanation

Solution: if he knew