there is [ ] ‘u’ and [ ]‘s’ in the word bus.填什么

there is [ ] ‘u’ and [ ]‘s’ in the word bus.填什么 There is ______"u"and ______"s" in the word bus. There is a"u "and a "s" in the word"bus' There is ______ “u” and ______ “s” in the word “bus”. & There is ( )"u"and ( )"s" in the word "us There is ()"u"and()"s"in the word "useful". There is ____"u" and ____ "s" in the word "bus''这一类题目怎么分辨用a还 There is _____ s" and _____ u"in _____ word"bus"? There is ____"U" in the word bus . There is ___"s"and ___"u" in ___word "bus" There is____"s" in the word "bus"空格里该填什么 There is( )"u"and （）"n"in the word "unit"怎么填?