-- I have great  __ in learning math and I’m so worried. Could you help me? -- Sure. I’d be glad to.
#29833
A
trouble
B
interest
C
joy
D
fun
推荐题目
---Is this key ________?--No, it isn’t. It’s ___________.
#29256
A
your, John
B
your, John’s
C
yours, John
D
yours, John’s
---Is this your book ? ---No , I think it’s ______ . 
#29545
A
Jim
B
Jim’s
C
Jim’s brother
D
Jim’s brothers