问题补充：
Mr. Johnson is a hardworking teacher. Every day, he spends too much time with his work. With little sleep and hardly any break, so he works from morning till night. Hard work have made him very ill. “He has ruined his healthy. We are worried about him.” That is which other teachers say. Yesterday afternoon, I paid visit to Mr. Johnson. I was eager to see him, but outside her room I stopped. I had to calm myself down. Quietly I step into the room. I saw him lying in bed, looking at some of the picture we had taken together. I understood that he missed us just as many as we missed him.with→on
答案：
(答案→)with→on
解析：文章介绍Johnson老师非常敬业，工作很认真以至于病倒了，作者描述前去探望的情景。
【小题1】考查介词。固定句型：spend …on ＋ n．/(in) doing sth.。
【小题2】考查连词。这是一个简单句，不需要用连词so。
【小题3】考查主谓一致。hard work 是不可数名词短语，作主语时谓语动词用单数。
【小题4】考查名词。形容词性物主代词后接名词。Healthy是形容词。
【小题5】考查表语从句的连接，这是其他老师说的，what连接表语从句，做表语从句的宾语
【小题6】pay a visit to这是固定词组“拜访“，
【小题7】这里指Mr.Johnson的房间，用形容词性物主代词his
【小题8】这是讲的昨天下午的事情，用一般过去式stepped
【小题9】some of后面接可数名词的复数：Picture改成pictures
【小题10】句意：我理解他想我和我想他一样。这里表示想念的程度，用much
