If it ________ for the heavy rain then, we would have arrived here ahead of time.
______ miss the game, they set out early after supper.
She ______ to Africa to study the animals there, though her family asked her not to.
______ the students who took part in the training is 450.
There was ______ time ______ I hated to go to school.
It is the first time that I ______ this kind of moon cake.