–Do you have some trouble ____ the problem? Do you need some help?--No, thank you. I can make it myself.
#50320
A
solve
B
solving
C
to solve
D
solved
推荐题目
—We can use QQ to communicate with each other online. —Good. Will you please show me ?
#50616
A
which to use
B
how to use it
C
what to use
D
where to use it
Tom is a hard-working boy, he always keeps English.
#50279
A
practice speaking
B
speak
C
practicing speaking
D
practice spoken