It’s snowing heavily outside. Put on your coat,_________ ,you’ll catch a cold.

Occasions are quite rare ____ I have the time to spend a day with my kids.

Everyone except Tom and John ___ there whenthe meeting began.

He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.

Greatly ________, the students made up their minds to carry ________ the experiment[ ]