We should protect the earth, ________ we will have no water to drink．

A．so

B．or

C．and

D．but

－What did Mr．Smith do before he came to China?

－He ________ in a car factory．

A．worked

B．works

C．is working

D．will work

－Hello! May I speak to Lucy, please?

－Sorry, I’m afraid you have the wrong ________．

A．way

B．name

C．number

D．telephone

－Mike, is this Tom’s pencil?

－Oh, yes, it is ________!

A．mine

B．hers

C．yours

D．his

－Look at the sign!

－Oh, I see．We ________ waste water．

A．can

B．must

C．mustn’t

D．needn’t

Mrs Smith has a cute baby．It often smiles at people ________．

A．friendly

B．lovely

C．happily

D．lively

My grandparents like to live in a house ________ is not very big but bright and comfortable．

A．that

B．who

C．what

D．whose

－What a big storm last night!

－Yes．I was doing my homework．Suddenly, all the lights in my house ________．

A．went off

B．turned off

C．took off

D．got off

Oxford University is ________ with tourists for its beautiful old buildings．

A．different

B．famous

C．special

D．popular

Trees ________ every year to make our city greener．

A．plant

B．are planted

C．were planted

D．will be planted