______ tourism developing, more and more people prefer to go travelling for a holiday

What’s wrong with your pen?– The ink ___________ come out.

The factory wants to make more cars with _____money.–I think it’s impossible.

If nobody breaks traffic rules and everyone is careful enough, most accidents can be .

______ has ridden on a railway train knows how _______ another train flashes by when it is traveling in the opposite direction．[ ]