18．--- Tom has a lot of parties recently.
---Yes, that may ____ why he didn’t do well in the test.
A, sum up B. add up to C. account for D. make sense of
—Have you heard of the North Korea’s nuclear test?
—Yes, _____ news came as _____ shock to me.
| A．the; the | B．a; the |
| C．a; a | D．the; a |
______ untidy, his bedroom needs doing out.
| A．Look | B．Looking |
| C．Looked | D．To look |
The people who love peace do think that it is time the violent conflicts in Iraq _____.
| A．come to an end | B．put an end |
| C．came to an end | D．brought to an end |
Although we met with many difficulties, we got back home ________.
| A．safely and sound | B．safe and sound |
| C．safe and soundly | D．safely and soundly |
The _________ are that he has lost the money. Otherwise, he isn’t so anxious.
| A．things | B．times |
| C．chances | D．cases |