有没有 Used he to smoke?那这题选什么 ( ) he to smoke?yes,he ( ) but now he doesn't A used ,usedB used ,used toC did ,used toD used ,did

有没有 Used he to smoke?
那这题选什么
( ) he to smoke?
yes,he ( ) but now he doesn't
A used ,used
B used ,used to
C did ,used to
D used ,did

没有.used to连用,表过去常常做.