Question

3
Fill in the correct particle: over, by,
off, on
1 He went ......
the details of the trip
before they set off.
2 The alarm goes
when it is
time to get up and begin working.
3 Yesterday, we went
... a
beautiful island as we sailed through calm,
blue waters.
4 It was so dark in the deep ocean that we
couldn't see what was going ....
...​

Answer 1

1 over / through (examined in detail)

2 off

3 by / past

4 on (was happening)