as two brothers, ________ aredoctors

Traditional Chinese medicine is thousands of years old and has developed _______ time

His uncle made a film _______ his story in his childhood.

―I am really struck by your spoken English. You speakso fluently. Have you been abroad―Yes. I ______ in London for two years.

where did you guys go for the summer vacation—-We________ busy with our workfor months, so we went to the beach to relax ourselves