1. Some students are studying in the classroom, _________________ (燈開(kāi)著).
2. In 2014, a lot of new rules which benefit the public will soon _________________ (開(kāi)始存在).
3. Police were called out to keep at the airport, and _________________ (檢查即將到達(dá)的飛機(jī)).
4. _________________ (有了很大變化) in my hometown since 1978.
5. There is a _________________ (激烈的比賽) to join the Special Branch.