To buy a handgun, you must be () years old.

You must buy expensive gifts to show your sincerity.

When you buy clothes, you must consider the material, quality and price.

How does a producer adjust the product price? A: If nobody buys a product at a particular price, he adjusts it higher. B: If some consumers buy it, but not enough to buy everything produced, producers must increase the price. C: If some consumers buy it, but not enough to buy everything produced, producers must increase the supply. D: Even if there is constant high demand for a product individual producers need to keep the price down.

The goods ____ I buy must be both functional and attractive. A: that B: whom C: where D: when

I must go to the ______ to buy some meat. A: grocer’s B: baker’s C: butchers D: butcher’s

智慧职教: If you want to buy something at a duty-free store, you must show your passport and valid boarding pass.

In central London of the UK, you must buy your tickets from machines at bus stops before you board the bus.

Things I want to buy must be functional and attractive. A: 物美价廉 B: 实用美观 C: 时髦炫酷高端气派 D: 高端气派

Another impact of computer technology that must be addressed buy educators is the Internet, more ________, the vast amount of information that it makes available. A: Precisely B: solely C: Fluently D: Specifically