.It was the four years from 2004-2007, ____ I spent studying for a master’s degree, ____ I will never forget.
31.America was_________was first called “India” by Columbus.
30.It seems water___from the ceiling for some time . We’ll have to climb to the roof with a ladder.
29.To pass the exam, Li Hua had a busy week ______ to the radio and the tape.
28.With so much work _____ with , I doubt if I shall have time to visit you.
27.They had a party last month, and it was a lot of fun, so they wanted to have _____ one this month.