My mother often spends 2 hours ______ housework every day.
It’s very difficult to learn geography well, but you can’t __________.
–Why isn’t your brother good at math? -- Because he thinks math is __________ than any other subject.
–What does your history teacher look like? . -- __________.
I ________ to do chores, but I have to do them every day.
-- Which floor does John live on? -- He lives on the __________floor of the building.