Nowadays，it is common to see people staring at their mobile phones instead of reading a real book，＿＿＿＿＿＿many experts are worried．

I’ll carry my laptop computer with me I have to wait too long at the airport

Would you like to join in the English corner—___________. What time is it

It’s such lovely weather. How about the two of us _____ a walk down the garden after supper

What idea can a man who is blind from birth have ____ color?