What does the idiom 'jump on the $bandwagon^{\prime}$ mean?

1.What is the past form of '$begin^{\prime}$?

2.She is a tenacious woman. The underlined word means-

3.He is popular

4.I have heard that she has won the prize. The underlined part is the example of:

5.You must work hard so that you may pass the examination. The underlined part is-

6.Identify the conjunction in the sentence 'I will go $\to the market like I am invisible^{\prime}.$

7.Which of the following contains true information about the extract?

8.Which one is the correct adjective form of '$cognition^{\prime}$?

9.The synonym of '$emancipation^{\prime}$ is¾

10.Hardly had I reached the station when the university bus-

11.Choose an antonym of '$stubborn^{\prime}$

12.Which of the following options is incorrect?