Read each sentence carefully. Put the verb in brackets into the Present Perfect or Present Perfect Continuous.
Do not use contractions. Write full forms.
1. Lately, engineers at the European Space Agency a small lunar robot in a series of rough-terrain trials to prepare it for future Moon missions. (test)
2. The young climate historian the original weather diary from 1880; she has only worked with a digital copy. (never / see)
3. What the Mars research team so far in the samples from the desert test site? (find)
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