Question

Read the article and fill in the gaps with the correct form of the verb. 1. An irish schoolgirl who a few month ago (1)(to design)........a computer code for sending secret messages via the interest and e-mail (2)(to win)..... The European Yong Scientists' competitions in Salonika, Greece .Sarah Flannery ,17, from Cork,(3)(to be).....on work training in Dublin when she (4)(to invent)......a code that is up to 30 times faster than RSA , the current data protection code.

Answer 1

1 designed 
2 e-mail won 
4  invented 

Answer 2

I can help you with your grammar exercise. Here is the article with the gaps filled in:

An Irish schoolgirl who a few months ago (1) designed a computer code for sending secret messages via the internet and e-mail (2) won the European Young Scientists' competition in Salonika, Greece. Sarah Flannery, 17, from Cork, (3) was on work training in Dublin when she (4) invented a code that is up to 30 times faster than RSA, the current data protection code.

I used the simple past tense for all the verbs, because the article is talking about things that happened or existed before now. You can learn more about the simple past tense from these sources: [Past Tense in English - Grammar Rules](https://www.grammar.cl/english/past-tense.htm), [Simple Past Tense: How to Use It, With Examples](https://www.grammarly.com/blog/simple-past/), [What Is Simple Past Tense?](https://www.thesaurus.com/e/grammar/simple-past-tense/), [Verb Tenses Explained, with Examples](https://www.grammarly.com/blog/verb-tenses/). I hope this helps you with your homework.