Was it in 2002 __________ he was still at middle school __________ the boy became expert at computer?
------She looks very happy. She ______ have passed the exam. ------I guess so. It’s not difficult after all.
It won’t be______he______to Taiwan for further study on computer technology.
The Yangtze River is almost the Pearl River.
Alice, together with two boys,for having broken the rule.
People have realized that they should go on __ balanced diet and do _____ exercise every day.