Sentence 1: The couple held hands in excitement. 
 Sentence 3: They couldn't wait to find out if it was a boy or girl 
 Sentence 4:  The doctor tried for several minutes, but the baby wouldn't move 
 Sentence 5:  It would have to remain a secret! 
 Option 1: The couple were walking along a beach. 
 Option 2: They were having an ultrasound for their baby!