问题
He is a _____ boy, so he can’t go to the park by himself.
A:six-year-old
B:six year old
C:six-years-old
D:six years old
B:six year old
C:six-years-old
D:six years old
正确答案是：
同类题型
Lucy is a _______girl. —Yes, she always studies hard at night.
Tell me how to operate the electronic computer, ______?
Peter，is there anything else you want to know about China?—Yes，I am still wondering __________ .
Last summer I took a course on______.
We often think of the days _____ we spent together on the island.