My mother is in Australia _____ present. [ ]

It’s necessary _____ us _____blind people cross the street.[ ]

Stephen, did you visit Nanjing Confucius Temple the day before yesterday?—No, I didn’t go there as you told me. ______, I went to Jiming Temple with my parents.

I like red best. What about___________?—My favourite colour is orange. It represents joy.

Do you know__________ they are talking_________?[ ]