Bell and Watson ______ demonstrated the invention at countless exibitions. (success)

13. Bell and Watson ______________ demonstrated the invention at countless exibitions. ( success) 14. His speech caused great ______________to a lot of people . ( annoy) 15.Fire ______________ the building completely last night . ( destruction ) 16. HCM City is an important ______________ center in Vietnam. (commerce) 17.There are special _______________________ for people working overseas.(arrange) 18. Jack loves the ______________________of summer evenings . (peace)