Instruction
Select the best answer to complete the sentence.
1. China changed significantly in the -------- half of the 20th century.
2. A -------- number of European people believe that Japanese culture is very exotic.
3. The number of department staff was doubled to deal with the system trouble caused ------- large-scale blackout.
4. Because of roadwork, Mr. Cho's drive to the office may -------- longer than usual.
5. How -------- does your wife go to Honolulu for a year ?
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