—Do you know the headmaster well?—Not really, just a nodding ______.
. ________ on the subject for half an hour, Liu Ying suddenly stopped.
. She offered me practical ________ with my research, for which I would appreciate for my whole life.
. “ Look at him! He behaved ________ nothing had happened”, said Mary.
. They were singing and dancing to ________ their high spirits though it was very cold.
. The weather is so ________ this year that we can hardly stand so many cold days!