He _____ be really difficult at times even though he ,generally speaking, is a nice person. 
#63426
A
can
B
should
C
shall
D
must
推荐题目
—Happy birthday!— Thank you! It’s the best present I_________ for.
#63166
A
should have wished
B
could have wished
C
may have wished
D
must have wished
—I don’t mind telling you what I know. —You _____. I can manage it myself. 
#63188
A
mustn’t
B
ought not to
C
can’t
D
don't have to
She ______ into the thick forest alone on such a dark night.
#62275
A
dares not go
B
dares not to go
C
dare not to go
D
doesn’t dare go