Tiếng anh Lớp 6: IV. Make questions for the underlined words 1. My younger sister is five years old . 2. Lan often goes to school by bike . 3. Lisa is doing her homework at the moment. 4. Her voice is so beautiful and sweet. 5. I won the first prize in a competition last year . 6. My mother is in Ha Noi at the moment., giúp em giải bài này ạ, em cảm ơn thầy cô và các bạn nhiều.