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
--I hope he won't get ill during the examinations. --___________ . He has been very well recently.
The boss____________ the worker how to do it, or the accident couldn't have happened.
She liked the dictionary so much that she would like to take it ____________ it cost.
Don't be joking. It's time to____________ your business.
It may not rain, but you had better take an umbrella__________.