想一想，选一选。(10分)
( )⑴“你知道吗？”应这样说：________
A．Do you know? B．I don't know.
( )⑵想问“它们是什么？”，应这样说：________
A．What's this? B．What are they?
Do you like_____, Gogo? Of course .Let’s go.
A.swim B.swimming C.swimming
This is ____ very expensive watch.Don’t touch it.
A.an B.a C.the
Yesterday ______ my birthday. I ______ a party at home.
A. was, had B. is have C. was have
________ is the skateboard? It’s 87yuan.
A. How old B. How much C. How often
My father and mother like _______ very much.
A. run B. running C. ran