As is known to all language learners, the newly learnt words will soon be forgotten unless ______ used in everyday communication.
The young man, _____ in heavy traffic on the way, got home an hour later than usual.
Don’t run red lights, _____ you may get run over by a car.
Language is changing all the time. Some English words today can mean totally different things to _____ they meant before.
Give my regards to your parents when you _____ home.
The unemployment rate has decreased _____ 2% to 5.4%, compared with 7.4 % last year.