1 . —Jim, come out. Let’s go to play football.
—Sorry. I’m          a math problem.

A．working out

B．working on

C．working for

D．work on

2 . They will do what they can __________ (work) out the problem for others.

3 . We didn’t plan it like that but it w_______ out very well.

4 . 在老师的帮助下，我解出了那道数学题。
________________________ the teacher. I _________________________________.

5 . Ann解不出这道数学题。
Ann can’t________ ________ the math problem.

6 . This math problem is too difficult. Can you help me ________?

A．work on it

B．work out it

C．work it out

D．work for it

7 . — How will you help with the activity?
— We will ________ leaflets to ask people to take part in.

A．put out

B．hand out

C．work out

D．take out

8 . I want to know how their strategies work out.
_____________________________________

9 . This problem is not that easy_______(work) out.

10 . Li Ming is so careful that he always looks over his exercises to ________ there are no mistakes.

A．make sure

B．find out

C．think of

D．work out