请根据句意从方框中选出合适的词，并用其适当形式填空，使句子通顺

     …important    culture    active    thirty-three    necessary…

1. The principal gave us a talk on the            of protecting the environment yesterday.

2. All of us are grateful to him because he always            helps us solve problems.

3. It’s             to tell him the details of the trip. He won't go with us tomorrow.

4. There are many history and              differences between China and England.

5. ―Who is the              President of the USA?  

   ―Harry S. Truman.

请根据句意从方框中选出合适的词，并用其适当形式填空，使句子通顺

     …important    culture    active    thirty-three    necessary…

1. The principal gave us a talk on the            of protecting the environment yesterday.

2. All of us are grateful to him because he always            helps us solve problems.

3. It’s             to tell him the details of the trip. He won't go with us tomorrow.

4. There are many history and              differences between China and England.

5. ―Who is the              President of the USA?  

   ―Harry S. Truman.

A mother planted many kinds of vegetables in her garden. One day, she said to her , “Betty, come here. Look at all these little yellow marks（斑点）on the of the cabbages ( a kind of vegetable ). They are eggs of a kind of insect. They are very beautiful but very bad for cabbages. This afternoon you must all the eggs on the leaves and kill them. In this way, you will help us have , greener and bigger cabbages.”

Betty didn’t think she could do it and in the end she forgot all about it. The mother fell ill for a few days and work in her garden. When she was well, she took Betty with her to the garden to see the cabbages. To surprise, the insects have eaten every leaf. When Betty saw this, she began to . Then her mother said to her, “We should never put off（推迟）what we have to do today till . And you must learn to deal(处理) with the bad things they are small, or it will turn into a big problem.”

1.A. sonB. motherC. daughterD. sister

2.A. treesB. leavesC. grassD. top

3.A. seeB. look atC. findD. look for

4.A. betterB. worseC. thinnerD. newer

5.A. at mostB. at lastC. at the momentD. at once

6.A. mustn’t B. couldn’tC. needn’t D. can’t

7.A. myB. ourC. her D. their

8.A. cryB. shoutC. runD. work

9.A. yesterdayB. todayC. tomorrowD. later

10.A. butB. while C. andD. before