There is no water in the river,＿ ＿ (改为反意疑问句)

There is no water in the river,(is there)?(改为反意疑问句)
He had to make the water clean first.(改为一般疑问句)
(Did he have) to make the water clean?
I don＇t know what I should do.(写出同义句)
I don＇t know (what to do).
It is time to clean me.(写出同义句)
It is time (for cleaning) me.
Don＇t forget to turn off the tap.(写出同义句)
（Remember to）turn off the tap.
根据汉语写出单词
Many old people go to the park to （exercise）.(运动)

1.There is no water in the river,is not(用缩写）there?
2.He had to make the water clean first.
Dose he have to make the water clean？
3.I don＇t know what I should do.
I don＇t know what ...

1.is there?反义疑问句前肯后否，前否后肯 2did he助动词帮助变疑问句 3what to do 后接动词不定式或也可以写成how to do it 4 for cleaning 结构it is time for sb to sth 某人该做某事了 it is time to do sth 该做某事了 it is time for doing sth ...

1. is there (no体现否定，前否后肯）
2. Did he have (had体现一般过去时，借助助动词did)
3.what to do
4. for cleaning
5. Remember to
6. do sports/do exercise/take exercise/play sports

1.is,there?2.Did he have3.what to do4.that cleaning5.Remember to6.exercise