4.I thought ______of the matter but still couldn't find out

4.I thought ______of the matter but still couldn't find out i thought of the matter but till couldn't find out the reaso They searched the mountain but still couldn't find the_____b I tried to repair the car myself but couldn't find out what 单项选择.1.She ________ the pockets but still couldn't find the 1.the doctor___the crying baby ,but he couldn't find out wha I tried my best,but I still couldn’t reach to the top shelf I tried hard ,but I couldn't find the ( )to the problem I couldn't find another way ____ the problem A to work out B the boy looked for his toy everywhere,but he couldn't find i I have ___ all my papers but I still can't find the contract 2.i've （）all the photos inthe drawer ,but i still can't find