The bus _______ at 8:30 p.m., so I have to be at the station by 8:10 at the latest.
China's icebreaker Xuelong ______ by heavy floes since Friday after rescuing passengers on a Russian vessel stranded in Antarctica.
The sign _____ “In case of _______ fire, break the glass and press _______ red button.”
— Hi, John! I’m going to Greece for my holiday.— Greece? A splendid country, ______ well worth visiting.
— The government requires that every primary school student do sports for at least one hour every day.— _____. It is high time that students took exercise in order to build a strong body.
—Have you ever seen two leaves that are exactly the same?—Never. Leaves differ ____ each other ____ size and shape.