The sentence needs _______ once more.
| A．explained | B．explaining | C．being explained | D．to explain |
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 |
37. The boy is curious _____ everything. I am sure he is very clever.
| A．to | B．about | C．with | D．In |
36. It is said that the step-mother is very cruel _____ the children.
| A．with | B．at | C．about | D．To |