This chapter is so difficult to ______ that I shall have to read it again later.
#72871
A
read
B
know
C
find
D
digest
推荐题目
Tom tried to __________ in German.
#73077
A
understand himself
B
make himself understanding
C
make himself understood
D
make himself understand
She is          being pleased about it: she is very angry.
#74813
A
free from
B
free of
C
out of
D
far from