We can see no clouds in the sky. Therefore, there’s no doubt ______ it will be fine tomorrow.
She looks forward every spring to _______ the flower-lined garden.
A cook will be immediately fired if he is found _______ in the kitchen.
It is said that in Australia there is more land than the government knows _______.
The research is so designed that once _______ nothing can be done to change it.
Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.