Past perfect for the earlier of two past actions

This type of question, asked 3 times: 20 Jul 2023 S4, 21 Jul 2023 S3, 26 Jul 2023 S1. All 3 questions below, oldest first.

Try each one first, then open its answer.

Question 1
20 Jul 2023 S4
78 $Parts of the following sentence have been underlined and given as options. Select the option that contains an error. I had gone to Siliguri before I go to Raiganj.$
Tap an option to check your answer.
Question 2
21 Jul 2023 S3
91 $Select the most appropriate option that can substitute the underlined segment in the given sentence. The family has visit many parts of Europe when the man was working with an international educational agency.$
Tap an option to check your answer.
Question 3
26 Jul 2023 S1
76 $Select the option that contains a grammatical error in the underlined portion. When Mrs. Sinha came to see Varanasi in 2019, Nupur has already been teaching there for five years.$
Tap an option to check your answer.

Question 1