1\You should take this medicine (there times a day).(对加括号的提问）
______ _______ should I take this medicine.
2\He is so old that he can care for himself.(同义句）
He is old _______ to ________ care for himself.
3\A heavy traffic stopped them form doing to school in time.(同义句）
________ _______ the heavy traffic,they were late for school.
參考答案:1. How often
2. enough to take
3. Because of
