Fill in the blanks with the proper forms of the verbs in the brackets.1. Politics _____ (be) much more difficult than physics.
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2. Statistics __________ (suggest) that the population of this country will be doubled in ten years’ time.
3. The United Nations _____ (be) an international organization to maintain world peace and security.
4. The surroundings of animals _____ (be) worsen.
5. There _____ (be) a pair of scissors in the bottom drawer.