Daily Mail of November 25th reported that American astronomers (天文学家)______aplanet that was most similar to the earth.
This math question is too difficult. Can you help me?
Mr. Black asks the kids ________ in the river, because it’s too dangerous.
He is very angry with his mother, because his mother alwayshim with the best student.
—What’s wrong? —I can’t do my homework now. Imy homework in the classroom this morning.
My sister ______ go to bed _______ my mother came back last night.