So suddenly ________ that people had no time to escape. [ ]

orry to say this, but the room here is very dirty.—______. I will ask someone to clean it right way.

He was a good student and scored _________ average in most subjects

In our city, citizens _____ the library, which makes it easy for them to read any book they like. []

Excuse me, where is Children’s Park, please—Take the No. 5 bus and _____________ at the fifth bus stop.