It’s a rule in my class that our classroom ______ before 6:00 p.m. every day.
A．be able to clean B．should be cleaning
C．must clean D．must be cleaned
Hurry up, Mike. You must get to the airport an hour before the plane _____.
A．gets off B．turns off C．takes off D．puts off
-- ________ will you come back from the library, Linda?
-- In an hour.
A．What time B．How often C．How soon D．How long
I _____ the newspaper while my mother _____ TV plays yesterday evening.
A．was reading; was watching B．was reading; watched
C．read; was watching D．read; would watch
– Which dress do you prefer?
-- The red one. It _______ more beautiful.
A．feels B．sounds C．smells D．looks
16-year-old students in England should understand fifteen _______ words.
A．thousand B．thousands C．thousand of D．thousands of
