--When do you have __________to help me with my English? I am reading the Encyclopaedia Britannica, but it is too difficult for me! --You can come to me ___________!

There are many __________ shops in this street. I want a pair of ________ shoes.

It’s getting dark, please _______the light.

Smile to the world, _____ the world will smile back to you.

—        have you learnt English?   —Since 2006.