Do you have difficulty ____ English?
#54275
A
to learn
B
of learning
C
learning
D
learn
推荐题目
We have two rooms to live in, but I can't decide_________. 
#59679
A
to choose which one
B
choose which one
C
which one to choose
D
which one will I choose
I have no idea what life would be like without water. The underlined part means “_____ ”.
#61939
A
don’t remember
B
don’t know
C
don’t believe
D
don’t expect
Nancy spent half an hour _______ playing the piano every day.
#56821
A
practice
B
practicing
C
to practicing
D
to practice