選擇正確答案填空完成句子。
1. I often play _____________ (a, the, / ) football.
2. He often plays _____________ (a, an, the) guitar.
3. I _____________ (sometime, sometimes) watch TV in the morning.
4. Look at Jenny. She is singing _____________ (loud, loudly).
5. Do you usually help your mother _____________ (do, doing) the housework?