．—This math problem is too difficult. Can you show me _______, Dad?
—Sure.
A．what to work out B．what to work out it
C．how to work it out D．how to work out it
．— _________ city!
— Yes．Tourists from all over the world come to visit it every year.
A．What a beautiful B．How lively
C．What busy D．How a big
— Tom talked with a friend of _______ on the Internet for a long time yesterday.
A．himself B．he C．him D．his
— Can you play chess?
— No, but I can play ________ piano very well．
A．a ; the B．the; / C．/; the D．the; a
—Would you like to join us in the game ?
— , but I have to help my mum．
A．I will B．I’d love to
C．I’m afraid not D．No
— Would you like something to drink?
— I’m not thirsty．
A．No, thanks． B．Yes, please．
C．OK. D．Some water, please.
