Fuzhou-Quanzhou-Xiamen high-speed railway has been running for more than a year______, fewer people take the trip by bus

Can those ____ at the back of the classroom hear me

The first African-American president of the United States received a(n) ____ welcome in the African countries, where he was received as a returning son. [ ]

The hall had no spare seats left last night ________，the performance achieved a great success [ ]

What are you anxious about? —_______.