This washing machine is environmentally friendly because it uses _____water and electricity than _ ___models.
---You’ve read the Frog by Moyan,haven’t you? ---Yes,I_______second time and I got a better understanding.
We’ll never forget this terrible accident and the damage_______has caused to the area.
--- You ought to have given them some advice. --- , but who cared what I asked?
_______, I believe, and you will find the student is very outgoing.
Because of the Mid-autumn Day happening to _________, we have just enjoyed a longer National Day vacation than ever before, but it is estimated that it will be 38 years __________ we can experience such a coincidence again.