.Emergency line operators must always ______ calm and make sure that they get all the information they need to send help.
I live in_________ at_________.
The train leaves at _________and arrives at _________.
If you take a bus,it will only take you 10_________,but it’s about 30 _________walk if you want to go there on foot.
He is an_________boy.
About_________of the students in the class are girl students.