相关试卷
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1、 We ____ plant trees in spring every year.A、should B、would C、must D、will
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2、 My sister is interested in ____ about plants.A、learn B、learns C、learned D、learning
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3、 Many animals ____ their lives because of pollution.A、lose B、lost C、are losing D、will lose
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4、 We should stop ____ plastic bags to keep the Earth clean.A、use B、using C、to use D、used
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5、 ____ is important for us to save water every day.A、This B、That C、It D、What
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6、 Let's ____ together to clean the park.A、work B、to work C、working D、worked
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7、 There ____ a class meeting about protecting nature tomorrow.A、is B、was C、will be D、has been
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8、 We ____ to the nature park last weekend.A、go B、went C、will go D、have gone
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9、 The air in the countryside is ____ than that in the city.A、fresh B、fresher C、freshest D、the freshest
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10、 My mother often tells me ____ play near the river.A、don't B、not to C、to not D、not
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11、 If we ____ too many trees, animals will lose their homes.A、cut B、cuts C、will cut D、cutting
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12、 It's our duty ____ care of wild animals.A、take B、to take C、taking D、took
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13、 There ____ a lot of fish in the lake ten years ago.A、is B、are C、was D、were
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14、 We should try our best ____ the environment.A、protect B、protecting C、to protect D、protected
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15、 The government made laws to protect （野生的）animals.
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16、 There are many kinds of （植物）in the mountain.
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17、 We should （减少）the use of cars to protect air.
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18、 My father often tells me the （重要性）of saving water.
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19、 It's important to keep the （平衡）of nature.
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20、 The （海洋）covers most of the Earth's surface.