―Do you prefer spring ________ summer?―________, because it’s warm and flowers start to come out.
It is said that robots can do many things ___ humans can’t do ______the control of computers.
--- I wonder _____________without water.---About a week.
The young man came riding full speed down the road on his bicycle._________ it was!
---He's already back to Australia,__________?---____________. He is on a visit to Shanghai.
--- I bought the digital camera two months ago. --- You mean that you __________ it for two months.