—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
— Oh, dear! She _________ a lot of difficulties!
| A．may go through | B．might go through |
| C．ought to have gone through | D．must have gone through |
The purpose of Internet is not to make life more difficult,but _____it easier.
| A．make | B．to make | C．making | D．made |
into English, the sentence was found to have an entirely different word order .
| A．Translating | B．Translated | C．To translate | D．Having translated |
the shark drawing closer to her，the clumsy swimmer was ____almost to death.
| A．Seeing；scared | B．Seeing；scary | C．Seen.；scare | D．To see；scared |
The construction of the two new railway linesby now.
| A．have been completed | B．has been completed | C．has coompleted | D．have completed |
to their own work ,most of the parents spend little time with their children.
| A．Devoting | B．To be devoted | C．Having devoted | D．Devoted |