Ptop. 5 Make sentences in the correct tense.
1 scientists / try / to learn more about our oceans (Present
Continuous)
Scientists are trying to learn more about our oceans.
2 they / do / this for a long time (Present Perfect)
3 in 1956, scientists / use / technology to check fish numbers
for the first time (Past Simple)
4 the fishermen / record / how many fish they catch
(Present Simple)
5 this ship/look/ for fish (going to future)
6 before this, they / not have / computers (Past Simple)
be pleas♥️♥️♥️♥️​