The traffic is heavy these days. I ________ arrive a bit late, so could you save me a place?
I like _____ in the spring when the weather is warm and everything begins to grow.
Is it to hold the 2010 World Exhibition _______ makes Shanghai the focus of the world?
We can never expect bluer sky unless we create less polluted world.
My headache is killing me.I it away.But now it’s getting worse and worse.
---Rose, mind your step! Aunt Jane slipped over on the wet floor and broke her leg yesterday. --- ___ .