一、单项填空（本大题有10小题，每小题1分，共10分。从给出的选项中选出可以填入空格处的最佳选项） 1. it is believed that apple a day keeps the doctor away. a. 不填 b. the c. an d. a 2. medicines be put out of the reach of children. a. can b. may c. need d. must 3. the manager often changed his mind， made us very angry. a. whom b. which c. that d. whose 4. as everyone knows，the sun in the east and sets in the west. a. rose b. rises c. has risen d. is rising 5. i sleep wi
