His backache is only _________ for not watering the flowers.

Mr. Smith is in good health now for it is quite a long time since he __________.

It'sseventhirty.I_________gotoschool.

We Chinese people should __________ that China is just like a dragon proud and powerful.

—Howareyoutoday?—Oh,I__________asillasIdonowforalongtime.