— I hear your pen friend is visiting Suzhou at present. Is it the ______ time for her? — Yes, and she will come for a fourth time next summer.
The doctor told me to eat more _______ because it's good for my health.
After two ____ work, Tom was too tried to move.
A number of ______are on in the museum. Let’s see them tomorrow.
Pork is healthy ______ and tea is a healthy ______ .
Grandma is now at _____.