isnecessarythatyoustarttrainingafewmonthsbeforet...
问题详情: isnecessarythatyoustarttrainingafewmonthsbeforethewalk. A.This B.That C.What D.It【回答】D 考查it的用法。it可用作形式主语,构成固定句...
问题详情: isnecessarythatyoustarttrainingafewmonthsbeforethewalk. A.This B.That C.What D.It【回答】D 考查it的用法。it可用作形式主语,构成固定句...