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4. A. tried B. opened C. added D. lived
5. A. breathed B. seated C. heated D. wanted
6. A. guided B. managed C. started D. chatted
7. A. threatened B. answered C. promised D. traveled
8. A. invented B. completed C. surrounded D. risked
9. A. liked B. involved C. believed D. happened
10. A. collected B. moved C. lasted D. shouted
11. A. wanted B. disappointed C. looked D. needed
12. A. helped B. played C. passed D. hoped
13. A. worked B. stayed C. installed D. improved
14. A. intended B. decided C. delicated D. endangered
15. A. cleaned B. educated C. referred D. delayed