I have tried very hard to find a solution to the problem, but in vain —-why not consult with Frank? You see, _________.

_______ does your mum usually go to work?—She usually goes to work at 7: 30. [ ]

Mrs. Black doesn’t know if her American friend_____ to Heilongjiang. If he_____ here, she will meet him at the airport.[ ]

_______ you tell me how I_______ get to the No．168 Middle School?

catch the first bus to the Great Wall, we get up early.