this manths problem is()()than ay other one in this book

this manths problem is()()than ay other one in this book this is a （ ) problem Please help me this problem. This problem is very___for her. __ __ THIS MATHS PROBLEM IS ! It is difficult () out this maths problem This problem is not above us . this maths problem.为什么加s Can you __ __ this math problem? Different people solve this problem （different） I have a problem __ this watch. To address this problem啥意思? this problem is difficult and ---------- (bore). this maths problem.为什么加s this是单数啊 Can you work out this maths problem?同义句___you___ ___ work out this maths problem? This problem is more difficult than that one.This problem( ) ( ) ( ) ( )that one. will you discuss this problem at the meeting?( )this problem ( )( )at the meeting? It difficult for him to solve this problem alone.改同义句 He has ( ) ( ) this problem ( ) ( )