1 . (2018·全国Ⅱ)Corn production has jumped nearly 125 percent over __________ past 25 years, while rice has increased only 7 percent.

2 . The authorities________ whether to build a new car park. (根据句意填空)

3 . Instructors should___________new movements before letting the class try them. (根据句意填空)

4 . The police have___________an investigation into the incident. (根据句意填空)

5 . Meetings are___________to take place all over the country. (根据句意填空)

6 . Students should___________their own interests , as well as do their school work. (根据句意填空)

7 . We need an effective strategy to fight___________. (根据句意填空)

8 . He___________himself and so saved his country. (根据句意填空)

9 . Julie has___________up for courses on English and French this year. (根据句意填空)

10 . Parents must be___________to the symptoms of the disease. (根据句意填空)