Use the prompts and the verbs in brackets to complete the sentence with the past modals.
1.Yerasyl isn't in the laboratory so he.......
........... (go) home early.(I am sure)
2. An apple .....( fall) on Newton's head. (We can't be sure)
3. Sanzjar ........ (be) pleased when he failed the Maths test.( I am sure it didn't happen)
4.She ............ (do) well in the test because she never studie. (I am sure it didn't happen)​