The ______ of male and female gametes.
The children were surprised by the school's sudden _________ - it got much bigger!
We are building an _________ to our house.
The acid caused _________.
The horse took some __________ before he would enter the ring.
I came to the __________ that they were wrong.
The cars travelled over the __________ bridge.
The naughty child needed ___________.
Exams test your _____________ of a subject.