单项选择题

You'd better ______ the water until it has been boiled.

A．not to drink
B．not drink
C．not drunk
D．not drinking
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单项选择题
Why do Americans like to go to fast food restaurants
A．It’s because fast food restaurants are fast, informal, and inexpensive.
B．It’s because people can easily find fast food restaurants.
C．It’s because people like to eat hamburgers.
D．It’s because fast food restaurants sell nearly every kind of food.
单项选择题
Is the food in fast food restaurants always ready before the customers order it
A．Yes, it is.
B．No, it is seldom ready.
C．Yes, it is cooked to order.
D．No, not always, but usually.
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