_____ it’s a little bit hard for some of us to imitate the standard English accent, we still communicate with foreigners very well.[ ]

“If you’re walking down the right path andyou’re willing to keep walking,_____ you’ll make progress”, said the presidentObama.

_______ puzzles me most is that I don’t know _______ the difference between those two lies.

Do you know the price of the ticket– Yes. Each _____ 180 yuan.

For a moment nothing happened. Then______all shouting together.