I have ____ useful book．It is about how to playbasketball．（ ）
| A． |
an．/ |
B． |
a．/ |
C． |
an．the |
﹣Excuse me，can you tell me ______？
﹣Sorry，I am too busy now．Why not search the Internet for information？（ ）
A．how does smog （雾霾） come into being
B．where the national space station lies
C．why are tigers becoming fewer now
D．how many years did the Qin empire last
﹣It's said that nuclear power will be used to produce electricity in Xianning．
﹣However，nuclear power _____be very dangerous．（ ）
A．canB．needC．mustD．should
﹣Please keep off the grass．Can't you see the sign____
﹣Sorry，sir！I didn't see it．（ ）
A．
B．
C．
D．
﹣What do you think of the lastest TV play the Name of People？
﹣It's very popular．Millions of families ____by it during that time．（ ）
A．attractedB．are attracted
C．were attractedD．were attracting
﹣Did you do something special on Father's Day？
﹣Yes．I made my father a card in the ____of a heart to express my love．（ ）
A．heightB．shapeC．designD．model