Every autumn peasants the soil to destroy the weeds.
51. They planned to go to Beijing for sightseeing, but because of their daughter’s unexpected illness they had to stay at home _____.
50. The lazy boy got up very late and went to school in a hurry. When he arrived at school, he found that he had put his socks on _______.
49. --- Does he study very hard at school? --- Yes, he studies _____.
48. I will ask my father to telephone you _____ he comes back.
47. I'd like to go with you. , I have to finish the report now.