﹣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
Frank knows much about the city because he ______ there many times．（ ）
A．wentB．has goneC．has been
Could you please tell me _________？（ ）
A．where does he liveB．where he lives
C．where he live
Mr．Lee used to _______ dinner in the restaurant，but now he is used to _______ every meal with his family at home．（ ）
A．have，eatB．having，eating
C．have，eating
Tea ________ by farmers in our hometown．（ ）
A．is grownB．grewC．grow
Can I use your dictionary，Grace？
Sure．But you return it after class．（ ）
A．canB．mustC．may