Bob has a ring .He doesn 't have a watch(合并为一句） We think math is boring （变为否定句）

Bob has a ring .He doesn 't have a watch(合并为一句） We think math is boring （变为否定句） Bob has a great collection of shells. He has been ___shells___ three years. A.collected,since B.collecting,about C.collect,during D.collecting,for Bob has gone to California,I hear.Oh,I wonder when he ------- A leaves B left C was leaving D has left —Bob has gone to California.I hear.—Oh.I wonder when he ______.A.has left B.leaves C.left　D.was leaving Tom was so angery with Bob that he hit--------.A.Bob in the head B.in Bob's headC.Bob on the head D.on Bob's head don't look down upon Bob,he has his own advantage oh,yes,_____ others are weak,he is strong.A,if B,when C,though D,where -Don't look down upon Bob.He has his own advantages.-Oh,yes.______others are weak,he is strong.A.before B.when C.where D.though .Bob can`t buy the bike because he has ________money with him.A.a few B.few C.a little D.little Bob can`t buy the bike because he has ________money with him.A.a few B.few C.a little D.little It_____that Bob has been away for a long time.He hasn't come back yet.A seems B looks C looks like D seems like Bob was overweight last year.He ___ go on a diet.A.has to;B.have to;C.had to;D.must 这个题目选什么呀 where is bob?He _______America for a weekA has gone off to B has left for C has been off to D has set off to请说明原因, --bob has gone to california.-oh,can you tell me when he a.has left b.left,c.is leav...--bob has gone to california.-oh,can you tell me when he a.has left b.left,c.is leaving d.would leave.选哪一个? What is Bob like?What does Bob like?What does Bob look like?这些的区别是啥答句：He has big eyes and a round face. your mother has a ring的第一人称 Bob must be very wealthy--- yes ,he ___ more in one day than I do in a week1.--- Bob must be very wealthy .--- yes ,he ___ more in one day than I do in a week .A.has been earned B.had earned C.earn D.has earned 翻译并解释原因 Bob has a billion dollars while Kate has a million,so Kate is _____than Bob. A.less rich B.not richer C.no rich D.poorer -----Do you know where Bob is?-----He has won a holiday for two people to New York.He _____ his mum.A.is taking B.have taken C.take D.takes为什么选A?选B有什么不行?