In students’ eyes, a good teacher should have many good virtues, but _____, he or she should be knowledgeable[ ]

It was ________ Asimov was eleven years old ________ his talent for writing became obvious.[ ]

The house _____ Lu Xun used to live is now a museum.

Word came from Chile at least 300 people were killed in the 88-magnitude earthquake

The door burst open and ， shouting withanger.