The dead rate is _____ pigs and recovery usually ______ within 7-10 days. A low in; occurs B. rich in;happens C. high in; came about D. poor in;took place
The traffic in our city is already good and it ______ even better.
--- Why? Tom, your shirt is so dirty! --- Mum, I ______ my storeroom downstairs.
--- We ______ that you would fix the TV set this week.--- I’m sorry. I ______ to fix it this week, but I’ve been too busy.
--- Have you finished the report? --- No. I ______ it all this week.
--- What ______ when I phoned you? --- I ______ my work, and I wanted to go out.