—David has made great progress recently. — _______，and _______.
A、Sohehas；soyouhaveB
以so开头的句子如果是表示前面所表达的内容也适合于另一个人或物时，句子要用倒装语序，这时前后的主语不一致;但当so开头的句子只是重复前一句的意思，表示“的确”，“如此”，前后主语是同一人或物时，句子不用倒装语序。根据题目的意思，本题的答案是B。
WhichofthefollowingisNOToneofthemainsourcesofnewwordsinthepresent-dayEnglishvocabulary?
Whichofthefollowingispartiallyconverted?
Wecannotleavethistoughjobtoaperson________.
Idiomsnominalinnaturehavea(n)______asthekeywordineachandfunctionasanouninsentences.
WhichofthefollowingisNOToneoftheextra-linguisticfactorsthatcausechangesinmeaning?
