The old man lives ________, but he doesn’t feel

, did you have a good time during the holiday— ______ I had to do homework most of the time

If you don’t know how ______ new words, _____ in the dictionary.

Since several years ago， many supermarkets in China have _______ free plastic (塑料的) bags.

Stressful environments lead to unhealthy behaviors such as poor eating habits, which _________ increase the risk of heart disease