Did Jim come?—I don’t know. He _______ while I was out.

Many of the creatures in Rowling’s world are not real, and much of____happens is strange．

Which of the two magazines will you take—I’ll take______ though I find ______ of them are very useful to me.

We go to school ____ a bike

People are advised not to drive after drinking, but ______ seems not to help a lot.[ ]