He must be agood student ,_____he is always careful with his lessons

He must be agood student ,_____he is always careful with his lessons he must ( )here.《be》 He must be happy! Thanks for your answer.I'm deeply moved to read your experience.Now you must be agood commander of English.Would you please make friends with me?Thanks. He must be fun.何如改成一般疑问句?Must he be fun 还是Is he fun? He must be fun.何如改成一般疑问句?Must he be fun 还是Is he fun? 英语翻译he must be--------- ------------thirty years old He must be verg tired.变反意疑问句? He must be American等于什么 Where is he?He must还是must be on that island.选择题,是选 must 还是 must be.谢谢帮忙! Businessman should honest for nobody want to buy unuse product.Everybody know the earth is circular except you .He dose not be approved as agood person. he must be bad.he must be very wise.用either...or连接 The dentist thought he must be very.The dentist thought he must be very ill. He must be ---- when he heard the exciting news He must be ill ,for he isn't here. He coughs _____-(terrible).He must be ill. He must be at home.为什么用be? be so sure he must be Mr.Zhang 改为否定句be so sure he must be Mr.Zhang