—Shall we go out for a walk?—Sorry. This is not the right ____ to invite me. I am too tired to walk.
He was reading a novel ________ the story reminded him of ________ he had seen during the last war.
The reason ________ she gave for not being present was ________ the heavy snow prevented her coming.
Does the way you thought of ________ the water clean make any sense?
I failed in the final examination last term and only then ________ the importance of studies.
Henry has been looking forward to ________ his present for days, so now all that he’s looking forward to is ________ whether his father is back home.