用括号内词的适当形式填空
acomputerdoesonlywhatthinkingpeoplehaveit____(do).
whodidyouhave____(paint)thewallyesterday?
i'msorryican'thelpyoubecauseihavealotofletters_____(answer).
thevillagersaregoingtohaveanewbridge_____(build)overtheriver.
whohadthecandle______(burn)throughoutthewholenight?
whathavetheyhad______(do)tostopthepollutionfromthechemicalworks?