题目

根据短文内容，用括号内所给动词的适当形式填空，必要时可加助动词或情态动词。    Li Wei is a middle school student. He    69    (live) in Linshu town. Every day he   70   (go) to school by bike. He    71    (not be) to a foreign country before. Next week he   72    (go) to Singapore with his parents. They plan    73   (stay) in Singapore for a week.   “Traveling to Singapore is a dream for me for a few months,” Li Wei said to his friend Jim. “ It    74    (come) true soon.” He wants to visit the “Night Safar下列各式中，能用平方差公式计算的有（ ）A.（a﹣2b）（﹣a+2b）B.（a﹣2b）（2a+b）C.（a﹣2b）（a+2b）D.（a+2b）（﹣a﹣2b）