Write the correct form or tense of the verbs in brackets

V. Write the correct form or tense of the verbs in brackets

26. In 2017, they __installed_____ (install) solar panels to provide heat for their hot water.

27. I ____________ (visit) Rio de Janeiro twice so far. It's very diverse!

28. This weekend James ____________ (watch) a film on Netflix.

29. I think that we__________ (use) driverless cars widely in the next two decades.

30. Overcrowding ____________ (cause) huge problems such as housing, congestion, unemployment and air pollution.