Little Johnny felt the bag, curious to know what it _______.
| A．collected | B．contained |
| C．loaded | D．Saved |
47. Three hundred firemen raced to the hotel after a smoke detector ______ the alarm soon after midnight.
| A．set off | B．set out | C．gave away | D．gave off |
48. Don’t respond to any emails _______ personal information, no matter how official they look.
| A．searching | B．asking | C．requesting | D．Questioning |
49. I looked at it and found that including the wine, the bill ______ $70.
| A．arrived at | B．topped at | C．reached to | D．came to |
50. Is there a gas station around _____ I can get some petrol?
| A．which | B．what | C．where | D．That |
51. We didn’t plan our art exhibition like that but it _______ successful.
| A．worked out | B．proved | C．went on | D．Carried |