I had never taken part in any competitions before I started playing tennis.

I had never taken part at any competitions before I started playing tennis.

I have never taken part at any competitions before I started playing tennis.

The bus arriving at 10 a.m.

The bus arrives at 10 a.m.

The bus is arrive at 10 a.m.

The had did push-ups by the time I had came.

They had did push-ups by the time I came.

They had done push-ups by the time I came.

He makes an impression on a good person.

He makes impression of a good person.

He makes an impression of a good person.

Is she smart enough to work on this project?

She is enough smart to work on this project?

Is she enough smarter to work on this project?

I’m sorry, I can’t help. I have to many tasks to do now.

I’m sorry, I can’t help. I have too much task to do now.

I’m sorry, I can’t help. I have too many tasks to do now.

Does he come across as serious person?

Does he come across as a serious person?

Does he comes across to be a serious person?

It’s necessary to warm up before the training.

It’s necessary warming up before the training.

It’s necessary warm up before the training.