用所给词的适当形式填空。每词限用一次。

      not plan,  solve,  enjoy,  write,  fill,  discover 

1.Laura usually {#blank#}1{#/blank#} beautiful music to get relaxed.

2.Be careful! She   {#blank#}2{#/blank#} the cup with hot water.

3.In the future, humans  {#blank#}3{#/blank#}  more secrets of nature.

4.To our surprise, the problem {#blank#}4{#/blank#} by the expert three days ago.

5.  {#blank#}5{#/blank#} to your parents is a good way to communicate with them.

6.—Where are you going on vacation this summer?

— I {#blank#}6{#/blank#}  it yet. 

    If you receive an invitation, be sure to {#blank#}1{#/blank#}quickly. If you can't go, you should tell the host and give him some{#blank#}2{#/blank#}If you can go, make sure of the place and the{#blank#}3{#/blank#}and make a note of your host's telephone {#blank#}4{#/blank#}Let the host know if you will be a little {#blank#}5{#/blank#}You'd better {#blank#}6{#/blank#}twenty minutes earlier,{#blank#}7{#/blank#}do not stay much late.

    You don't have to {#blank#}8{#/blank#}a gift for your host ,If you would like to {#blank#}9{#/blank#}your host, you can send a note of thanks to your host or{#blank#}10{#/blank#}your host afterward (以后) to express(表达) your thanks .