21. The father made a promise his daughter worked hard, he would take her to visit Huangshan.
A. if B. that C. whether D. that if
22. Dr Brown examined the old man carefully, and finally the first doctor’s judgement.
A. recognized B. confirmed C. benefited D. insisted
23. Please go the ship quickly. There’s only 10 minutes left.
A. abroad B. aboard C. board D. broad
