I regret ________ that you have failed the exam, but what you should do now is not to regret ______ so much time but to seize every moment from now on. [ ]

What can Lily do — She can play _______ drums.

The children were warned of not being too ______ about things they were not supposed to know.

I hear Jack Chan will come to Laiwu next week. –Really _______ he comes, my youngersister will be very happy,

Will you walk a little faster? —I was afraid you could not _____ .