Who did the head ________ the wire?

A．have fix

B．has fixed

C．have fixed

D．has fix

Although he has taken a lot of medicine, his health ________ poor．

A．continues

B．keeps

C．remains

D．proves

－How did you find last night’s performance?

－Wonderful!I’ve never seen ________ one．

A．a better

B．the better

C．so good

D．so better

When I said some students were so lazy that they couldn’t hand in their exercise－books, I ________ to you．

A．didn’t refer

B．hasn’t referred

C．wasn’t referring

D．don’t refer

－It’s ________ that all the people invited will come before nine．

－Don’t be so ________．

A．certain ;certain

B．certain ;sure

C．sure; sure

D．sure; certain

Apples are usually sold by ________ weight, and eggs are sometimes sold by dozen．

A．the ;the

B．\;a

C．\;the

D．the; a

－Can you finish fixing it on time?

－Only when ________ skilled workers join in now．

A．another two

B．two the other

C．more two

D．other two

－What caused the accident?

－It was my fault, sir .I ________ to the left．

A．ought not to have turned

B．needn’t have turned

C．shouldn’t turn

D．couldn’t turn

A computer only does ________ you have instructed it to do．

A．how

B．after

C．what

D．when

Don’t speak in such a manner, ________ you’ll get into trouble．

A．that

B．or

C．as if

D．and