强化练习 1. Complete the sentences with the proper forms of the given words or phrases. free; look one’s best; current; ridiculous; start with; endure; former; keep fit; set out; point 1. He tries to ______________ by jogging every morning and playing basketball every Sunday. 2. Learning English usually means ______________ the ABC. 3. Our back garden ________________ in spring time, when the flowers attract lots of butterflies. 4. I think it’s _____________ to spend large sums of money on operation to change our appearance. 5. Junk food seems to be a _____________ problem among young people. 6. No one wants to have to ____________ bad health when they get older. 7. Bob is a ______________ historian. 8. She ______________ her objection to the plan. 9. After the exams, the students were _____________ go home. 10. I don’t see the ____________ of arguing with her.