Tom and I ____ good friends, Tom’s grandparent ______ a teacher in our school.

When you come across new words in reading, it is not a good idea to in a dictionary at once.

Neither Tom nor Jack and I ______his students, but each of us _____ gone to the hospital to see him.

Mr. White’s never been to Taiwan Island before. ________ Miss Lin.

The discovery of these tombs is _______ for scholars’ studying the history of the Tang Dynasty