when does an object expand?.when it is cold B.when it is hot
when does an object expand?.when it is cold B.when it is hot
英语翻译When an object is not moving ,it is at rest.It will stay
when it is an head?
When is it open?还是When does it open?
water _______(expand) when it is heated.填expand什么形式,为什么,
When.is.it?
When is it now?
it is when句型
有When is it
When is it?快,、
you should wears s( ) when it is very hot
It makes us warm when the day is cold.