Professor Li,along with his assistant,_____ on the project day and night to meet the deadline.A work B working C is working D was working这题选什么?为什么是这样

Professor Li,along with his assistant,_____ on the project day and night to meet the deadline.A work B working C is working D was working这题选什么?为什么是这样 professor The students in Class Three listened ____ to the lecture given by professor Li yesterday.(attend) Mr.Li is _____professor of our school.professor 前是否加定冠词? Professor Li will give a ( ) on learning next Friday.括号里填个单词,首字母为t professor li became a famous_______(物理学家）at his early age professor li,many students want to see you.shall they wait here or outside! Professor Li was made ( )head of our universityA./ B.a C.THE D.ONE Professor Li,who I thought had gone abroad,still teaches in Peking University. Along The w--------- in blak is Miss Li.The w--------- in blak is Miss Li.大写提醒 professor li is possible to come to our school to give us a speech.哪错了 Professor Li will give us a lecture__studying and living in Britain next week 这句为什么用on The noodles who I cooked were delicious.和The professor whom you just talked is Mr.Li.怎翻 One day Li Lei was walking along the bank of a river. Professor Smith ,along with his assistants ,________on the projectday and night to meet the deadline .A.work B.working C.are working D.is working Li Wang Bing and Li Lei are w( ) them near the playground （W后面填什么?）