This sentence tests the correct past tense verb for conducting research. The correct verb is 'made'.
This sentence requires the past tense of 'doing' research. 'Made' is the correct past tense verb for 'research'.
| Question | The NASA scientists … some research. |
|---|---|
| Title | 1412 |
| QType (0=kprim,1=mc,2=sc) | 2 |
| Q_1 | made |
| Q_2 | took |
| Q_3 | did |
| Answers | 0 0 1 |
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