It was in the lab _____ was taken charge of by Professor Zhang ______ they did the experiment .
Seeing the road ________ with snow, they had to stay at home, watching TV and drinking coffee.
Following Christianity, witnesses have to _______ on the Bible to tell the truth.
Don’t mention that at the beginning of the story, or it may _______ the shocking ending.
If you the medicine, you better now.
The first prize goes to _______ makes the greatest contribution to the company.