Question

then another drop fell (use a question tag)​

Answer 1

Answer:

then another drop fell, isn't it?

Answer 2

The question tag is used as follows: Then another drop fell, didn't it?

• As we can see, there is no auxiliary verb present in the given statement. If an auxiliary verb is present, then it is to be used in the question tag.
• However, in absence of an auxiliary verb, we use does/did/do. The choice from these three depends on which tense is there in the given statement.
• As the statement given here is in the past tense (understood from the verb 'fell'), we will use 'did'.
• The statement is in affirmation, so negative 'not' is added.
• The subject in this sentence is 'drop', therefore 'it' will be used as a pronoun.