填空题

【参考答案】

将alternate改为alternative。
<上一题 目录 下一题>
热门 试题

问答题
A．It led to many other inventions.B．Man had no use for it then.C．There were no wheels in nature.D．All of the above.
单项选择题
What can be inferred about the swallows mentioned in the conversation
A．They are a type of insect.
B．They are a kind of fish.
C．They are a type of bird.
D．They are a type of pig.
相关试题