Question

they (help)____ us tomorrow

Mary (speak)___ Vietnamese well

he (clean)___ his room at present

we (do)____ the final test last week 

Answer 1

Will help

Speaks

Is cleaning

did

Answer 2

- They will help us tomorrow. 

- Mary speaks Vietnamese well.      

- He is cleaning his room at present.

- We did the final test last week.

Answer 3

1Will help

2Speaks

3Is cleaning

4did