4. If you ________to the left, you'll find the post office.

3. ________to the left, you'll find the post office.

2. ________many times, he still couldn't understand it.

A. Having been told　　　　　　 B. Told

C. He was told 　　　　　　　　D. Though he had been told

1. ________many times , but he still couldn't understand it .