Choose present perfect or past simple i (visit) bob last month. we (promise) to help them already. she (never/do) anything bad. she (go) on holiday three weeks ago. we (not/do) our work yet. she (see) the film three times. they (swim) in the sea last summer.
We have promised to help them already
She has never done anything bad
She wenr on holiday three weeks ago
We haven't done our work yet
She has seen the film three times
They swam in the sea last summer