Your T-shirt is so cool. Could you tell
题型：选择题
问题：
Your T-shirt is so cool. Could you tell me _______? [ ]
A. where you buy it
B. where do you buy it
C. where you bought it
D. where did you buy it
题型：选择题
Your T-shirt is so cool. Could you tell me _______? [ ]
A. where you buy it
B. where do you buy it
C. where you bought it
D. where did you buy it
、
、
、
四种元素，按指定化合价最多可以组成化合物的种类有[ ]