用所给词适当形式填空1. we must do our homework ____(care) 2.i am sure

用所给词适当形式填空1. we must do our homework ____(care) 2.i am sure the biacks_____(come)in three week 3.i have _____(try) my best ,but i fail 4.did you find _______(something)in that room 5.the sun and its plancets are _____(call)the solaor systew 6.there have lots of _____(start)in the blue sky