根据句意，用括号中所给词的适当形式填空。

It has two ________. (foot)

根据句意，用括号中所给词的适当形式填空。

Her brothers are ________ than mine. (young)

根据句意，用括号中所给词的适当形式填空。

My box is ________ of the three. (heavy)

根据句意，用括号中所给词的适当形式填空。

The sun is ________ than the moon. (big)

用所给单词的适当形式填空。

They have some problems ________ there on time. (get)

用所给单词的适当形式填空。

Let's go ________ (hike)

用所给单词的适当形式填空。

Please come here a little ________ (early) next time.

用所给单词的适当形式填空。

“Are these cakes ________ (they)?”

“Yes, they are. ”

用所给单词的适当形式填空。

The bottle is empty, but the box is ________ (empty的反义词).

用所给单词的适当形式填空。

Mother often ________ (wash) clothes on Sunday.