用so...that...和such...that...填空: 1. He mastered English _______ well ________ he was able to write long articles in English. 2. Pingpong is ________ a popular game ________ people all over the world play it. 3. He had ________ little education ________ it was not easy for him to solve the embarrassing problem. 4. The foreigner had ________ many coughs during the night ________ he could hardly fall asleep.