Task: Text Completion
Input (English): Sentence1: Tom decided to drive to his girlfriend's house today. Sentence2: He drove as fast as he can although there was a lot of traffic. Sentence3: When he got into the front of the house, he rang the doorbell. Sentence4: No one answered however, the front door was open. 
 (A) Tom began to laugh. (B) Tom began to worry.
Output (English): B