15. Not until the game had begun __ at the sports ground.
A、should he have arrived
B、would he have arrived
C、did he arrive
D、had he arrived
Ⅱ. Vocabulary and Structure ( 15 points ) Directions : There are 15 incomplete sentences in this section. For each sentence there are four choices marked A, B, C and D. Choose one answer that best completes the sentence and blacken the corresponding letter on the Answer Sheet. 6. Jonathan and Joe left the house to go for__ after supper.