Mr Smith has a lot of business______. I know by______ that this man cannot be trusted.
___ I saw her, she was working in a shop.
Some of you may have finished unit one. _____, you can go on to unit two.
____ it rain tomorrow, we would have to put off the visit to the Yangpu Bridge.
— Hello, may I have an appointment with the doctor? — ___.
Now a lot of new technologies can ___ problems in industry.