Ⅰ.词语运用
用所给词或短语的适当形式填空。
concentrate on acknowledge possess approve of beneficial straight away hold back in advance catch out feed up
1. I phoned my mum _______ after the news.
2. I decided to ______ all my efforts ______ finding somewhere to live.
3. He refused to _______ his defeat.
4. I’m afraid he doesn’t ________ a sense of humor.
