Fill in the blanks with the most suitable option:
"Give me your phone number."
"I _______ it to you before I ________."
Answer : A
Important thing to determine the sequence of tenses in a sentence is to know that it is arranged in the order is Past --> Present --> Future, just as it happens in real life. Therefore, it is important to determine the occurrence of each action relative to each other.
Reading the sentences in the question we understand that the speaker would provide the other person with his/her number before he/she leaves.
Grammar Rule Required to know here:
If the principal clause is in future tense, subordinate clause is introduced by the conjunction like "before". "Before" is a temporal conjunction and would signify that the second action actually happened first.
Therefore, in the question the first blank will be in future tense ("will give"), and the second blank will be in the simple present tense ("go").
Thus, the correct complete sentence is: