(4)
Tom wants to practice his English and he is free from July 15th to August 7th. Which two activities can he choose?
A . American Study tour, to be a judge for the English speech
B . To be a library assistant, to be an interpreter for Agricultural Products Exhibition
C . American Study tour, to be an interpreter for Agricultural Products Exhibition
D . To be a judge for the English speech, to be a guide at the hospital.