Only when you have gained a good knowledge of grammar ________ write correctly.

A．you can’t               B．you can         C．can you   D．can’t you

The pattern on this carpet(地毯) ________ that of the sofa well.

A．matches               B．agrees          C．equals         D．keeps

I don’t doubt ________ the conference about world population will be a successful one.

A．whether            B．that       C．if              D．what

Charles Babbage is generally considered ________ the first computer.

A．having invented                                          B．inventing

C．to invent                                                    D．to have invented

Although many experts spoke highly of this new teaching method, it turns out ________ well.

A．not to work          B．to not work          C．not working         D．not having worked

Because he failed to pay his bill, the company ________ his electricity.

A．cut off              B．cut out              C．cut up              D．cut down

—Mum, why do you always make me eat an egg every day?

—________ enough protein and nutrition as you are growing up.

A．Get   B．Getting    C．To get      D．To be getting

I don’t think ________ a good decision to give him the job since he has no experience at all.

A．it              B．that                 C．this          D．these

________ she finds out that you have broken her CD player?

A．How if      B．What if     C．What about      D．How about

Little Mary felt cold, so she stood ________ to her mother.

A．closely      B．close C．closed      D．closing