Jack is interested in robots, so he went to the restaurant in Liaocheng ___________ he heard that there were robots working as waiters there.
-----How’s it ________ ? ------Great.
Here is a _______.
-----Is Henry cleaning his room? ---- ________ .
-----______ are the students talking ______? ----- A policeman.
It’s four o’clock in the afternoon. The boys __ in the pool.