I ______ ride a bike to school. But this morning I took a taxi because I got up late.

Will you go home tomorrow evening? —No, I’m going to a lecture, or at least I’ m planning _________.[ ]

________I have said sorry to Jack several times，he still refuses to talk to me.

When shall we begin our trip —We’ll set out____________ our head teacher arrives.

24．This is an exciting area of study，_______new applications are being discoveredalmost daily．