在缺水和不宜用水地区使用凿岩机打眼时，可不采取除尘措施。
参考答案：错
-I didn’t go to the art show, because I lost my ticket.
-You have borrowed mine. I didn’t go to see it anyway.
A．might
B．need
C．could
D．must
.
A．
B．
C．
D．
