A、at least one hour
B、more than one place
C、more than one hour
D、at least half an hour
A、children have trouble with Internet slang and emoticons
B、children cannot tell “it’s” from “its”
C、children are sending instant messages in the classroom
D、children use Internet slang and emoticons in their writing
A、错
B、对
A、对
B、错
A、错
B、对