Look at my new digital camera. I bought it _____ June 1, Children’s Day.—Wow, how nice![ ]

I hadn’t seen her for 10 years, but I ____ her at once.

My mother’s birthday is ______ April 5,1965. [ ]

Do you know Jim’s quarrelling with his brother?— I don’t know. And _____. [ ]

I oftenthe words I don’ t know in the dictionary or on the Internet.