40．Can you tell me _______________________________ (事先) if you’ re coming? (ahead)

39．______________________________ (我突然想到) that I hadn’t seen Peter all day. (occur)

38．Excuse me. Is this the road _________________________ (通往) Windsor Castle? (lead)

37．The car ran into a crowd of people, __________________________ (其中好几个人) were sent to hospital immediately. (several)