Question

he walked fast so that he ----reach the station in time​

Answer 1

The correct answer is could as such: He walked fast so that he could reach the station in time.

Why did we use could here?

• Could, would, and should are used whenever there is a probability.

• It is a modal verb.

• Could is mostly used in past tenses.

• It is the past tense of can.
  

• The given blank is also in the past tense.