_____ he is very busy, he spends at least two hours every day surfing the Internet in order to find out the latest development in science and technology.
When Helen saw his tutor nod ________ to her, she calmed down and went on with her performance.
Never before________ seen a girl who can swim as fast as Ye Shiwen.
English is difficult________. Nobody can learn to use it in a few minutes.
The fact that she told a lie had a great influence on her ________.
“How could you lose so much money?” John asked his wife, eyeing her angrily from ________ the kitchen table.