Excuse me, but can you tell me which road I should take to the post office–______ of the four roads will do.

The Great Wall is so good a place ________many foreign people come to visit ________ it has become well known all overthe world.

Tigers wait ______ it is dark, then they go out to find their food.

By this time tomorrow, I ________ the novel being written at the moment.

Our garden is very beautiful, ____ inspring.