| I think it ______ that one have a good command of English if one wants to be engaged in international trade. |
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| A. useful B. a must C. essential D. vital |
| The situation in the Middle East is so ______ that we have to be ______ when dealing with the hostage issue. |
|
[ ] |
| A. complex; cautious B. difficult; anxious C. mixed; careful D. mild; eager |