4** Complete the dialogue. Use: tell, serious, sprained, believe, guessed, stuck, goodness. Two words don't match any gaps. A: What happened to your leg? B: I fell off my bike. A: I don't 1)....... How did that happen? B: Well, I was on my bike in the park when my friend's dog started running after me. ..! A: Oh my 2) What happened then? B: I lost my balance. A: Oh no! Don't 3) ...... it! me! B: You 4)....... down and 5) my leg. ..... it! I fell​