She looks very sad. I want to help her , but I just don’t know_________ to do.
In winter, we must pay attention to _________.
He thinks watching movies ________.
When we practice speaking English, we often end up _______ in Chinese.
There is ______ “u” and ______ “s” in the word “bus”.
-- Do you think the chicken taste_______?--She cooked it ______, I think.