(A) 用所给的词组填空。
as fast as possible at the same time as usual at least
at the beginning of at times at once at the head of
at the top of at most at first at last
1. I can pay only fifty pounds _______________.
2. _______________ my mother lets me watch TV in the evening.
3. The two runners reached the finishing line _______________.
4. It was late for school. Li Lei ran _______________.
5. She would go home, _______________, for Christmas.
6. If you find any mistakes, tell me _______________.
7. _______________ he knew the meaning of the text.
8. The exam will begin _______________ June.
