271. Wait for me for a few more minutes. Iam _____ to a letter from one of my former classmates at college and willfinish writing very soon.

________ my teacher couldn’t understand was ________ fewer and fewer middle school students showed interest in her lessons.

Between the two parts of the concert is an interval, _____ the audience can buy ice-cream [ ]

It is often the case _________ anything is possible for those who hang on to hope.

When I get puzzled about some difficultproblems, my teacher always encourages me and says, “Take it _________ .”