Nothing can stop us from ________ our city clean．

A．keep

B．to keep

C．keeping

D．keeps

I ________ you when I ________ your son．

A．will phone; see

B．phone; will see

C．will phone; will see

D．phone; see

Kate ________ her mother．She ________ swimming very much．

A．doesn't like; is like

B．isn't like; likes

C．doesn't look like; like

D．isn't like; is like

－I am not feeling well．

－You had better go to see ________．

A．a doctor

B．a teacher

C．a farmer

D．a driver

This question is difficult for us ________．

A．to answer it

B．answering

C．answered

D．to answer

I don't like these．Do you have any ________?

A．other

B．another

C．one

D．others

I must finish the work ________ I go home．

A．before

B．when

C．until

D．if

The foreign teachers have worked in that school ________ last year．

A．since

B．when

C．before

D．until

The dictionary is very ________．

A．help

B．helpful

C．helping

D．helped

You must drive ________ next time, or there may be another accident．

A．careful

B．mot careful

C．carefully

D．more carefully