It rained heavily in the south, serious flooding in several provinces.\
| A．caused | B．having caused | C．causing | D．to cause |
He________a wild duck，but he didn't________it.
| A．shoot at；shoot | B．shot at；shoot |
| C．shot；shot at | D．shoot at；shot |
The lack of money forced them to________their research.
| A．abandoned | B．abandoning |
| C．abandon | D．be abandoned |
The professor________at the meeting will give us a lecture next week.
| A．referred | B．referred to |
| C．referring | D．referring to |
The little girl________the bus as soon as it stopped，but to her disappointment，there were no seats left.
| A．got on | B．got out of |
| C．got off | D．got to |
He________his leg when he________in a football match against another school.
| A．broke；played | B．has broken；was playing |
| C．broke；was playing | D．broke；had played |