By yesterday, the plane ______out of view for more than a month.
--Please sit down. -- ________. A.Hello B.Thank you C.I’m fine.
--What color is the ruler? -- ________ A.It's a ruler. B.It's white. C. It's a white.
--Good morning,class! -- ________! A.I am fine B.Thank you C. Good morning,teacher
– ? – He is very friendly and helpful.
I my English book was in my school bag, but in fact I _________ it at home.