.---Tom, keep your_____ on your studies.
--- Sure, mum. I'll keep that in_____.
| A．mind;mind | B．heart;head | C．brain; mind | D．heart;brain |
42. In China children, even in their twenties depended _____ their parents _____ food and clothing.
| A．upon; on | B．on; in | C．on; for | D．at; to |
41. During her study in Massachusetts Institute of Technology she has got the degree _____ PhD, and it is a degree ______ chemistry.
| A．of; at | B．in; at | C．of; in | D．in; of |
40. Let’s put our heads together and decide _____ a plan of action.
| A．on | B．about | C．for | D．At |
39. Once everyone is _____ his life, he will instinctively(本能) find every possible way _____.
| A．in danger of; out of danger | B．in the danger of; out of danger |
| C．in danger of; out of the danger | D．in the danger of; out of the danger |
38. She is crazy _____ the film star, while her brother is crazy _____ surfing.
| A．to; for | B．on; to | C．for; at | D．for; on |