_____________ worries me the way he keeps changing his mind.
147. --- Where does Jack work?--- I’m not sure, but he worked at Motorola when I last met him, _____.
148. My father never _____ the idea that money brings happiness.
149. Do not start a book unless you can see from the first few pages that it is ______ you can easily read and understand.
150. He was never late for school, _______ more than once by the class teacher..
151. Oh, it is so cool in the house. You _______ have turned on the air-conditioner, haven’t you?