-----This returned Chinese scholar has become one of the top experts in this field.-----Yes, I know him very well. He _____ in Africa with wild animals for eight years.
He is determined to devote himself to ___ the country.
Whenever we were ___, he is always ready to ___ us some help.
The way ___ you are doing it is completely crazy.
The potato is a plant ____ in places ____ it is too cold to grow some other plants.
The eggs _____ cooked just now is delicious.