The mobile phone has influenced our life a lot since it_____. A. invents B. is invented C. was invented
—________ I smoke here?—No. You are not allowed to smoke in public places.
It is very important for us ________ English well.
Hurry up, _________ you will be late for class.
John is standing ________ Gina and Jim.
He didn’t go to school yesterday _______ he was ill.