Only when I left my parents for Italy _______ how much I loved them.
| A．I realized | B． I had realized | C．had I realized | D．did I realize |
53. She_______most of the prizes for swimming.
| A．carried on | B．was giving off | C．showed off | D．carried off |
52. Don’t worry. Your child is old enough to___________himself.
| A．take care of | B．care for | C．looking after | D．pay attention to |
51. --- There were already five people in the car but they managed to take me as well.
--- It _____ a comfortable journey.
| A．can’t be | B．shouldn’t be | C．mustn’t be | D．couldn’t have been |
50. A doctor was___________when Mother fell ill.
| A．called in | B．called up | C．call upon | D．called at |
49. You must go there at once because the situation prompt action.
| A．calls for | B．calls back | C．calls at | D．calls on |