句型转换。

l. They're used for seeing in the dark.(改为否定句)

    They ______ for seeing in the dark.

2. Liu Wei dong wanted to make Xiao y u happy.(改为一般疑问句)

    ______ Liu Wei dong ______ to make Xiao y u  happy?

3.The potatoes are too salty.(改为感叹句)

    ______ ______ the potatoes are !

4. Chinese people invented the abacus in the sixth century.(改为被动语态)

    The abacus______  ______ in the sixth century______Chinese people.

5. The children have never seen an Indian film, ______ ______?(完成反意疑问句)