They ______Hong Kong twice.
If George had followed his father’s advice, he ________ a lawyer now.
________ along the Silk Road led to world-wide business 2,000 years ago.
Brian talks to me like a child, _______ really annoys me.
--- Alice looks sad. Did you tell her about her brother’s accident? --- Sorry, I ________ her just before her final exams.
_______ we have planned ahead might change when we put it into practice.