Some TIPS for solving Right Forms of Verbs:
1) First of all, read the whole passage carefully. Try to understand what the passage is about and guess the words in Bengali or English without looking at the clues.
2) Then, look at the clues and understand their meanings.
3) Now, try to solve.
4) See in which tense the passage is.
5) Be careful if there is any passive voice or not.
6) Solve the gaps first which you are confident about.