________ around the Water Cube,we were then taken to see the Bird’s Nest.
—Why are your eyes so red?You________have slept well last night.—Yeah,I stayed up late writing a report.
Harry is feeling uncomfortable.He________too much at the party last night.
—You needn't take an umbrella.It isn't going to rain.—Well, I don't know.It________do.
________ that Marie was able to set up new branches elsewhere.
Scientists generally agree that Earth's climate will warm up over the next 50 to 100 years ________ it has warmed in the 20,000 years since Ice Age.