Choose the right variant:

1. I’m bored. I think I a computer game.

2. I think to our plan.

3. Sally in this festival.

1. I’m bored. I think I ___ a computer game.

The correct variant is "I’m bored. I think I want to play a computer game."

Explanation: In this sentence, we are expressing a feeling of boredom and the speaker is considering playing a computer game as a possible solution. The phrase "I think" indicates that the speaker is contemplating an action. In English, we use the phrase "I want to" when expressing a desire to do something. Therefore, the correct variant is "I’m bored. I think I want to play a computer game."

2. I think ___ our plan.

The correct variant is "I think about our plan."

Explanation: In this sentence, the speaker is expressing their thoughts about a plan. The phrase "I think" indicates that the speaker is considering or reflecting on something. In English, we use the phrase "think about" when we want to express that we are pondering or considering something. Therefore, the correct variant is "I think about our plan."

3. Sally ___ in this festival.

The correct variant is "Sally participates in this festival."

Explanation: In this sentence, we are talking about Sally's involvement in a festival. The verb we use to describe someone's involvement in an event or activity is "participate." Therefore, the correct variant is "Sally participates in this festival."