例：A：Jenny often walks to school.

B：Jenny walked to school yesterday.

C：Jenny is going to walk to school tomorrow.

—I went to a farm and picked a lot of apples.

    The Stonehenge is in Wiltshire in the southwest of {#blank#}1{#/blank#} (English). People {#blank#}2{#/blank#} (build) it in the Stone Age. Who {#blank#}3{#/blank#} (build) it? Why did they {#blank#}4{#/blank#} (build) it? No one {#blank#}5{#/blank#} (know). It is a {#blank#}6{#/blank#} (mystery). Now many people {#blank#}7{#/blank#} (go) there every year. They {#blank#}8{#/blank#} (see) the stones and they {#blank#}9{#/blank#}(want) to {#blank#}10{#/blank#} (find) the answer.