Make good preparations for your self-driving trip ______you’ll regret it when your car breaks down in a remote area.

d you see clearly who the driver was —No, so quickly _____ that I couldn’t have a good look at the face.

1． It’s time for class. Let’s stop .Look! The teacher decides ussomething important.

Whatever happens to you, you should be ______ about the future life.

The number of books in the bookshop is about 10,000 and a numberof them about science.