Разберем каждое предложение и составим вопрос:
1) The children visited their grandma *two days* ago. - When did the children visit their grandma?
2) Miss Chatter plays *tennis* on Sundays. - What does Miss Chatter play on Sundays?
3) The postcard is from *England*. - Where is the postcard from?
4) Billy likes *honey and sweets*. - Who likes honey and sweets?