______himself to his research on the IT technology, he soon made a breakthrough.
---Our familyto Taiwan Island this coming holiday. ---Have a great time!
---A car knocked Jack down while he was playing on his way home. ---Really? We are toldin the street.
Some pre-school children go to a day care center, they learn simple English games and songs.
How can shefrom her illness in this room which is so dirty and dusty?
—Do you mean that we have lost our way? —_____, my dear. We’d better ask someone for help.