I would say at once hope this helped
A. How many people will be coming to the party next week?
B. Which team won first prize last weekend?
C. What happened this morning when you were late for work?
D. Who told you the answer to the exam question?
E. Who lives next door to you ?
F. What is the right answer to this question?
G. Whose car is the red one over there?
H. How many students came to your English class?
