Having a walk after supper is certainly good for the old people, but it remains ______ whether they will enjoy it.
The most successful students are usually ________ who come to all the classes.
We have positive opinions on human rights, which is exactly________ they disagree on.
________, I believe, and your English will improve soon.
Would you please repeat what the man said? I ________.
—What do you say if we go to a skiing resort for the winter vacation? —________. It’s up to you.