As soon as his teacher begins lecturing, he begins to doze off, not intentionally but _____.
— The deadline is drawing, but I failed to challenge the task a third time.— ______ my brother have a try?
_____ you have offered 50 yuan , you can telephone for 100 yuan.
Deeply moved by her words, ____________. .
Just as Professor Scotti often _____it, success is ninety-nine percent mental attitude.
Wait a moment, please. When I _________ writing the letter, I will go shopping with you.