________ of them can work it out．So ________ can get full marks．

A．Nobody, none

B．No one, nobody

C．None, not any one

D．None, on one

－Have you finished the work?

－Not yet, but no matter how hard it is, we'll keep ________ until we make it．

A．failed

B．trying

C．tried

D．failing

I hope ________ thank the following people ________ their help and support．

A．to; to

B．for; for

C．to; for

D．for; to

My little son can ________ online for useful information．

A．find

B．search

C．search for

D．get

－Where is Amy?

－She ________ the department store to buy something to eat．

A．have gone to

B．have been to

C．has been in

D．has gone to

It’s your job ________ the pop stars．

A．introduce

B．introducing

C．introduces

D．to introduce

－How do you like this dress?

－It’s beautiful, and it fits me well．________ I like it very much．

A．Or

B．So

C．But

D．Since

The stage ________ by the students yesterday evening．

A．is set up

B．was set up

C．was setted

D．was set

Next week I will have a ________ holiday．Shall we go to Beijing?

A．four days

B．four-days

C．four-day

D．four-days’

I hope my father ________ ask me about my marks．

A．not

B．not to

C．won’t

D．don’t