升调↑降调↓
1.We won't go out for a picnic if it rains tomorrow.( )
2.If you listen to the teacher carefully,you can work out the problem quickly.( )
3.The dog will die son if we don't help it.( )
4.If you finish your homework correctly,your mother will be much happier.( )
5.I will buy this CD if I have enough money.( )
6.Is there anything I can do for you?( )
7.Does Ann work in the hospital?( )
8.Can you help me carry the box?( )
9.Shall we meet at the schoolgate?( )
10.Are you Mr Lu?( )