_______ it was late. Alam didn't seem in a hurry to leave.

- The correct answer is: Although

Although and though:
- The both mean ‘in spite of something’.
They are subordinating conjunctions.
- This means that the clause which they introduce is a subordinate clause, which needs a main clause to make it complete.

Example: Everyone enjoyed the trip to the final although we lost the match!

Source: Cliffs TOEFL