i must prepare questiond for words in brackets , please check for mistakes . :-)
● They didn ' t know the answer to one question. ( one)
Q: ForTo which question they didn't they know the answer?
● They didn ' t know who stole their bike. ( their)
Q: Whose is bike which was stolen?
●They mixed it with some cream. ( some cream)
qQ: What weredid they mixed?mix it with?
● She has hit him with a hammer. ( a hammer)
Q: By what wasWhat did she hit him? with?