题干
选词填空
is are
①—____ there any bridges in the city?
—Yes, there are.
②—____ there a lake in the forest?
—No, there isn't.
③—____there any tall buildings in the village?
—No, there aren't.
④—____ there a teacher's desk in your classroom?
—Yes, there is.
答案(点此获取答案解析）
Are,Is,Are,Is
，
，若
，则
的值为
