英语 动名词,只加ing?

英语 动名词,只加ing?
用动名词形式填空
1.It is no use______(ask) her about it.
2.She couldn't help_____(smile) at the words.
3.Soon he gave up_____(teach) and joined the army.
4.Mr.Li denied_____(see) the camera before.
5.He went on_____(do) the experiment that right.
6.Her job is______(make) paper flowers.
7.______(read) materials should be interesting.
8.We can improve our English only by______(work) hard at it.
9.Before______(leave) the room,you should turn off the lights.
10._____(plan) a holiday must be interesting.
我全把括号里的变成ing形式.这样做没错吧?
asking
smiling
teaching
seeing
doing
making
reading
working
leaving
planning
第4题，到底是seeing还是having seen或have seeing