Last month 3 people got injured in a gas explosion, has not been discovered yet.
—Is Bob still performing? —I am afraid not. He is said ___ the stage already as he has become an official.
She_____ have left school, for her bike is still here.
He decided to study ____ second foreign language in order to find ___ better job.
It __________ that the football match ________ put off because of the weather.
Only in this way __to make improvement in your study.