题目内容

The child ____ on the chair and eating a cake.

A. sitting
B. siting
C. is siting
D. is sitting

查看答案

搜索结果不匹配？点我反馈

更多问题

Please be quiet! Grandpa ______.

A. sleeps
B. is sleeping
C. sleeping
D. slept

Tom and I ____ standing on the Great Wall of China.

A. am
B. is
C. are
D. be

对于制冷装置的制冷系数描述正确的是：

A. 恒为正
B. 可正可负
C. 0<制冷系数<1
D. 制冷系数>1

对于冷暖空调，制冷系数高的、供热系数也高。（）

A. 对
B. 错