Difficulty: Medium
Average Score: 76%
Entry Exam
I am looking forward to -------------------- on a vacation next month.
Correct answer
B
Rationale
In this sentence, the correct structure to use after 'looking forward to' is the gerund form of the verb, which is 'Going'. The gerund form functions as a noun and is used after prepositions like 'to'. 'Go' (choice A) is the base form of the verb, 'Be go' (choice C) is grammatically incorrect, and 'Going to go' (choice D) is redundant and awkward. Therefore, 'Going' is the correct choice in this context.