Question

I'll go to the door
-- I hear the bell (Use if /Unless)​

Answer 1

The correct option is "if". The blank is filled as such: I'll go to the door if I hear the bell.

• If is used in conditional sentences. It introduces a situation that can or can not happen.

• If is a conjunction word. It helps us to join two clauses together to form a single sentence.

• If is a subordinating conjunction.

Answer 2

Answer:

i shall go to the door....hear the bell