I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so ___ (succeed). After ___ (instruct) to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my ____（perform）, for he smiled and said, 'Just one more thing, Mr Eames. Let us suppose that a child suddenly crosses the road in front of you. As soon as I tap on the window, you must stop within five feet. I continued __ (drive) and after some time, the examiner tapped loudly.