Question

1.He is trying to achieve success (change in present perfect continuous)
2.we congratulated my friend. (simple present)
3.He will be back in a short time. (simple past)
4.The students listened to the lecture. (simple future) ​

Answer 1

Answer:

1 he has been trying to achieve success .

2 we congratulate my friend .

3 he would be back in a short time .

4 the students will listen to the lecture.

Answer 2

Answer:

1. He have been trying to acheive success..

2.We said to my friend "congratulations"

3.He was back in a short time.

4.The students will listen to the lecture.