Question

【小題1】I was writing a letter when my mother got home. (對(duì)劃線部分提問(wèn))
___________ ___________ you doing when your mother got home?
【小題2】Could you give the book back to the school library tomorrow? (改為同義句)
Could you __________ the book __________ the school library tomorrow?
【小題3】“Are you mad at your sister?” Mary said to me. （改為間接引語(yǔ)）
Mary asked me ___________ I _____________ mad at my sister.
【小題4】當(dāng)我們遇到麻煩時(shí)，我們應(yīng)該向警察尋求幫助。（完成譯句）
We should             the police             help when we are in trouble.

Answer 1

【小題1】What  were
【小題2】return  to 
【小題3】if/whether  was
【小題4】ask  for

解析【小題1】對(duì)做某事提問(wèn)用疑問(wèn)詞what，后跟一般疑問(wèn)句，將be動(dòng)詞were提前，故本題空格處填What   were。
【小題2】本題的含義為你明天能夠把書歸還給學(xué)校嗎？return sth to+地點(diǎn)可以表示把某物歸還給某人或某地，故本題空格處填return  to。 
【小題3】一般疑問(wèn)句構(gòu)成賓語(yǔ)從句可用if或whether來(lái)引導(dǎo)，表示是否的含義，主句是過(guò)去時(shí)，從句也要用過(guò)去時(shí)，故從句的be動(dòng)詞用was，故本題空格處填if/whether   was。
【小題4】表示想某人尋求某物可用ask for來(lái)表示，情態(tài)動(dòng)詞should后跟動(dòng)詞原形，故本題空格處填ask  for。