21.________I forget, please remind me of my promise to attend your graduation ceremony. A. In addition B. In order that C. In case D. In order to 22.The traditional approach ____ with complex problems is to break them down into smaller, more easily managed problems. A. to dealing with B. in dealing with C. dealing D. to deal 23. He was proud of being chosen to participate in the game and he _____ us that he would try as hard as possible. A. insured B. guaranteed C. assumed D. assured 24. You have to ____ the whole situation before you make a decision. A. care B. survey C. look for D. find out 25. Since we have not resolved this problem so far, we need to adopt a different _____ to it. A. altitude B. appreciation C. application D. approach
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