Multiple choice

Directions: Fill in the blank with the correct option.

______________ the U.S. and the Soviet Union became bitter rivals in the following decades.

  1. Although they were allies during World War II,

  2. Although it was an ally during World War ll,

  3. Although they were an ally during World War II,

  4. Although we were an ally during World War II,

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The main clause mentions the U.S. and the Soviet Union, which are two entities. The introductory clause must refer to them as 'they'.