（1）A.A guide.
B.A teacher.
C.A doctor.
（2）A.One hour.
B.Two hours.
C.Three hours.
（3）A.At school.
B.In the restaurant.
C.In the host family.
（4）A.Do anything they like.
B.Practice English.
C.Watch films.
（5）A.Students can't bring anything with them.
B.Students will have it in four weeks.
C.It is not very hard.
（6）A.A book.
B.A pen.
C.A dictionary.