(用所给词的适当形式填空) Please buy some _________ (toothbrush) for them.

(用所给词的适当形式填空) Today is Sunday. Let's go ________ (skate).

(用所给词的适当形式填空) I can do my homework by _________ (I).

(用所给词的适当形式填空) There is a tall _________ (build) in front of the post office.

(用所给词的适当形式填空) She wants to be a _________ (science) when she grows up.

(补全单词) Humans will have less h______ to do because of robots．

(补全单词) Japanese scientists have a______ made robots dance．

(补全单词) It s______ that it will rain．

(补全单词) Lily can help w______ the housework at home．

(补全单词) It’s usually u______ for anyone to hear bad news．