While working on the farm, the students ________ a good knowledge of plant life
—You seemed not to be interested in the story yesterday. —Yes. I it in a magazine before.
We should go to school by bus or underground rather than by car global warming.
—Now, where is my key? —! They are waiting for us at the school gate.
The teaching building in the big earthquake was our chemistry lab.
He knows little English that he has never been offered an job.