题目

仔细阅读下面五个句子，然后用下面方框中所给单词或短语填空，使每个句子在结构、句义和逻辑上正确。（提示：方框中有一个单词或短语是多余的。） require,  organize,  wait, connect,  sell,  look for 46. —You look so worried. What can I do for you?    —I _______________ my key. Have you seen it? 47. Jack is a good learner because he always _________ what he needs to learn with something interesting. 48. English Day is coming, and we ________ an English party soon. 49. He_____________ to hand in his science report last we（1）5.04-3.5×0.7（2）8×（0.125+5）（3）5÷0.25÷0.4．