一般现在时be动词 — 英语词汇题
题目
用 be 动词（am / is / are）的正确形式完成句子，注意否定与疑问形式。1. My friends ___ not in the playground now; they ___ in the classroom. 2. ___ your cousin a new student in Class Two? Yes, he ___. 3. I ___ not good at swimming, but I ___ good at running.