Complete the following sentences as required（根据所给要求，完成下列句子）：

【1】They heard a small explosion from their bedroom. （改为反意疑问句）

They heard a small explosion from their bedroom, _________ _________?

【2】The fruits on the plate look like a kangaroo. （对划线部分提问）

_________ _________ look like a kangaroo?

【3】His voice was too weak for them to hear. （保持句意基本不变）

His voice was _________ weak that they _________ hear it.

【4】him, a button, pressed, beside, he, on the wall（连词成句）

_______________________________________________________________.