Doctors must have a lot of experience about _________ (operate)填什么啊?填operation还是operating?怎么不是operating的，不要指动作吗？

Doctors must have a lot of experience about _________ (operate)填什么啊?填operation还是operating?怎么不是operating的，不要指动作吗？ I must have a problem Men must have a backbone There have been a lot of ____in our city since 1990.A.woman doctors B.woman doctorC.women doctor D.women doctors must have He looks tired,he _______ too little sleep.A must have had B must have C must have been i must have a ipad 对还是i must be have a iPad 正确?哪个对? 英语翻译Doctors have to…… I must （can't/isn't)see a doctor 换He 做主语 是不是都不用第三人称单数 为什么?那I do not like doctors为什么He doesn't like doctors The patients will have to wait all day___the doctors work faster.A.untilB.unless为什么选A i think he must have been a mechanic,中的must和have been是什么词啊? He can't find his key.He ---------- them.A.must lost B.must have been lost C.must have lost ( ) are needed in the hospital.A.Man doctors B.Men doctors C.Woman doctors D.Women doctors Chinese doctors ___ it's important to eat a balanced diet.用哪个 give,get,need,believe,stay,have 英语I have two brothers.( ) of them are doctors.A.both B.all C.one D.neither What must they do?They must have a hoilday.标What must they do?They must have a hoilday.标准译文是: you must a----- have a good imagination 首字母填空 改错 jimmy have a toothache.must he see a denist