Many difficulties have ______ as a result of the overuse of coal
| A．risen | B．arisen | C．raised | D．arose |
By now, more than 100 photos ________ back to the earth by Chang’e-3.
| A．had been sent | B．has been sent | C．have been sent | D．will be sent |
The famous actor is familiar ________ us, but it is a pity that he is not familiar ________ me no matter how deep I love him.
| A．with; to | B．to; with | C．to; to | D．with; with |
Jack left ________ message for me, saying he was in ________ trouble.
| A．a; the | B．a; / | C．/; / | D．the; a |
________ with what he said, what he did was more valuable.
| A．Comparing | B．Compare | C．To compare | D．Compared |
Have you found out the exact reason why the dinosaur _________ many years ago?
| A．died down | B．died out | C．died from | D．died of |