In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
It must (has started) when I was eight or nine years old when the curse of cursive writing struck me.
- Ahave started
- Bhave start
- Chave starting
- Dno improvement
Solution & Step-by-step Explanation
The modal auxiliary verb 'must' is followed by the base form of the auxiliary verb 'have' (never 'has') when expressing a strong probability or deduction about a past event (must+have+V
3
). Therefore, "must has started" must be corrected to "must have started".
3
). Therefore, "must has started" must be corrected to "must have started".