Ithasbeenyears________Ireturnedhome.
C
译文：我回家已经有好几年了。此题考查连词 since 的用法。 since 表示“从 (过去某事 )以来，以后或到现在”时，主句多用完成时态。又如：Where have you been since I last saw you? 自从我上次见到你以后，你到哪去了 ?
Moderneconomics________thecountry’sagriculturalpolicies.
ThedifferencesbetweensynonymsexistinthefollowingareasEXCEPT______.
Generally,adictionarycoversthefollowingcontentsEXCEPT______.
Agoodworkerinakeyspotcould,so_______ashekeptupproduction,takeallthecoffeebreakshewanted.
Whathetolduswasmoreofa(n)________thanareality.
The Great Wall in China is one of the few _____ objects on the earth _____ from the moon .
Kerberos中最重要的问题是它严重依赖于（）
The sign at the entrance to the building says “The pets _____________!”
I think this pair of shoes doesn ’t fit you. It ’s a bit large. You’d better get a _____.
John said he would pay __________ second visit to China __________ next month.
Only 5 _____ of the population of America _____ farmers .
国际经济合作的范围主要是在______
跨国并购投资的重要特征是()
--- Have you moved into the new house? --- Not yet. The rooms __________.
《中华人民共和国对外贸易法》正式实施的时间是()。