根据所给提示，完成句子。每空一词，含缩略词。
（1）He did his homework last night. (改为否定句)
He ____ ____ his homework last night.
（2）The kid is playing the piano at the school music club. (对划线部分提问)
____  is the kid ____  the piano?
（3）Visitors love this city because it has historical sights and delicious food. (改为同义句)
Visitors love this city ____  ____  its historical sights and delicious food.
（4）他两个月没有收到他儿子的信了。(完成译句)
He hasn’t ____ ____ his son for two months.

①从娃娃抓起 ②普及九年义务教育 ③落实职业教育 ④发展高等教育

婴幼儿输液可选择头皮作为针刺部位，在这种情况下，药物随血液循环到达患病部位前可能没有流经的血管是（  ）

下面是甲、乙、丙三位同学制取乙酸乙酯的过程，请你参与并协助他们完成相关实验任务．甲、乙、丙三位同学均采取乙醇、乙酸与浓硫酸混合共热的方法制取乙酸乙酯．他们分别设计了如图所示的三套实验装置：

根据对话内容，从方框内选择恰当的句子填入对话相应的空白处，使对话完整，合乎情景(有两个多余选项)。
A：Hello，Mike! What's the time?
B：____ 
A：Where’s Bob? I can't find him.
B：I don't think he can come.
A：____ 
B：He has to look after his sister.
A：____ 
B：She doesn't feel well.
A：____  Did she go to see the doctor?
B：Yes．
A：____ 
B：The doctor said nothing serious，but she has to rest.