Use present perfect tense and simple past tense

IV. Use present perfect tense and simple past tense:

1. My uncle(move)…………………………….to Da Lat in 2005.

2. The Greens(be)……………………………to many countries in the world so far.

3. We(go)………………………..to that village to do volunteer work several times.

4. We(spend)………………………our summer vacation in Ha Long Bay last July.

5. Our teacher (explain)…………………..to us how to use the printer already.
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