31.I am sorry I ________to you earlier because I ___________very busy.A.haven’t written,was
B.didn’t write,have been
C.didn’t write,am D.haven’t written,have been32.The package_______ a book and five CDs and the course________ many topics.
A.includes,covers B.including,is covered in
B.including,covers D.is included,is covered.
(　)33.After the heavy rain,the sun _______and the river water_________
A.was come out,was risen B.appeared,raised
C.came out,rose D.has been appeared,has been risen
(　)34.You can type the letter after the file .
A.will be created B .to be created C.is created D.creates