How long can we read in the library? —It ______ from 8 a.m. to 6p.m..

Do you think that Obama is honest and capable man?—Yes. And that is why he was chosen president of America.

Millie and Kitty are good friends, they often _________ each other _________study.

You speak English well.Who teaches you?–Nobody.I learn it by _________.

How long have you been studying at this school? — I have been studying here­­­­____.