Fill in the blank in each sentence with proper word or words. (用适当的词填空。)1.The effect of ______ on ice cream sales is well documented.2. ______ dog keeps getting into our garden.3.______ moving in next door.4.The pollution could ______ the river's thriving population of kingfishers.5.We've got to get the economy under control or it will ______ eat us up.6.I ______ my job when the company moved to another stat.7.If a tooth feels very______ , your dentist may recommend that it's taken out.8.The ______ was bad.9.This happens ______ the children are in two-parent or one-parent families.10.More than seven million people have been______ by drou.