句型转换。

1. The child read a book two days ago. (改为一般疑问句)

   ________ the child __________ a book two days ago?

2. They went to play soccer last Saturday. (否定句)

   They ____________ _____________ to play soccer last Saturday.

3. He watches TV every evening. (用yesterday evening改写)

   He _____________ TV ____________ ___________.

4. I cleaned my room last weekend. (画线部分提问)

   __________  did you ___________ last weekend?

5. They were in London last week. (一般疑问句)

   ____________ ____________ in London last week?

图是甘肃省敦煌市地貌类型图。高大的鸣沙山环抱着月牙形洼地，泉水在洼地汇聚形成月牙泉（见图右下角照片），素以“千年不干”著名，但近年来日趋干涸，当地政府发出“拯救千年月牙泉”的呼吁。读图回答题。

小题1:月牙形聚水洼地的成因是

A．大湖萎缩而成

B．古河道残遗而成

C．人工挖掘而成

D．风力侵蚀而成小题2:泉水日趋干涸的主要原因是

A．气候变暖，蒸发增强

B．降水变少，雨水补给减少

C．风沙沉积，古河道淤塞

D．地下水补给量不断减少