Your efforts to develop good habits will ______ later, and it is well worth working hard to do so.
—I’m sorry to have kept you waiting. —Oh, not at all. I ______here for only a few minutes.
_______ interests me most in the world is the natural beauty of Guilin.
Idon’tthink______possibletomasteraforeignlanguagewithoutmuchmemorywork.
______forsometimeafteratiringdayisveryenjoyableandexcitingformeinsummer. ASwimB.SwimmingC.Goswimming D.Toswim
We believe scientists will ________a way to solve the problem of air pollution.