Possible Clues:

• Was a little scared of having been in front after the beginning
• Surprised from the outset, and went ahead
• Looked across empty terminal, surprised
• Surprised to find the vehicle is carrying acid
• Frightened or surprised suddenly
• Jumped out of line, alarmed
• Dismayed to have begun without student
• Frightened to open, was induced to
• It's frightfully sweet in the sled
• Frightened mildly