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We have only one each．So it is everyone’s __________to protect it．

A．job           B．work           C．duty           D．idea

She is a very kind person She thinks of________more than herself

A．other           B．others          C．the other        D．the other

__________their sunrise，Jim failed the exam．

A．To        B．For         C．In         D．With

My grandma’s bag is big enough and it seems that it can ______hold everything you need．

A．hardly          B．exactly          C．really         D．possibly

He usually sleeps with the window open________ it is very cold．

A．because            B．if             C．while         D．unless

--Cathy’s parents have bought her a new house with a swimming pool．

--Really? It __________be very expensive．

-A．can’t           B．mustn’t            C．must           D．can

--Why didn’t you open the door for me?

--Sorry．I_________ TV and didn’t hear the door bell．

A．was watching        B．am watching        C．watched        D．watch

--Look at the sign on the wall Smoking_________ here．

--Oh．I’m sorry．

A．doesn’t allow        B．isn’t allowed       C．is allowed        D．allows

--_________ if you had so much money?

--First，I would travel around the world．

A．How           B．What           C．Which           D．when

She has improved her writing skills greatly________ a diary

A．kept          B．keeping          C．by keeping         D．to keep