一般现在时与现在进行时的用法 — 英语词汇题
题目
从括号中选择合适的动词，并按句意写出正确形式，补全句子。1. Mia usually ______ (walk) to school, but today she ______ (take) the bus. 2. The school library ______ (open) at 8:00 every weekday. 3. Listen! Someone ______ (sing) in the music room.