I bought my younger sister a toy with my pocket money，________that is cheap but beautiful.

I don’t like to travel to big cities, because to me, one city is much like        .

 We also had different students in some classes, so ______was a struggle to remember all the faces.

Shanghai is bigger than             in Jiangsu and it’s also a very beautiful city.

---Can I help you? ---I’d like to buy a gift for my mother, _____at a proper price but of great use.