We have to try harder and ____________ a better idea to solve the problem.
| A．come on | B．come up with |
| C．come true | D．come out |
I think the Grand Canyon is unusual natural wonder of the world.
| A．a | B．an | C．the | D．/ |
—Our country _____ progress in science and culture in recent years.
| A．made such | B．has made such |
| C．made so | D．has made so |
When we went into the park, we saw someone _____ Chinese Kungfu.
| A．plays | B．played | C．to play | D．playing |
—Have you ever _____ Mudanjiang to see the Jingbo Lake?
—Yes, I have.
| A．went to | B．gone to | C．been in | D．been to |
You’d better speak aloud ______ we can hear you.
| A．so that | B．as … as | C．as if | D．since |