I _______ him not to smoke, but he didn’t think it necessary.
.Playing with a cell phone, he suddenly ________ the teacher staring at him.
.She seemed ________ the book before, but she said she had never.
.________ 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.