—The charity walk begins _______ 9.00 a.m. Don’t be late. —No problem.
When you feel helpless and _______, just remember you are not _____ in the world because your friends are around you, including me.
---Do you think it will be fine tomorrow?---_____________. It has rained for so many days.
It’s two and a half weeks since the exchange students __________ Wuxi.
Little Tom has got a lot of birthday presents, but he isn’t able to take all of them ___.
We can have ___ bluer sky if we create ___ less polluted world.