The classroon is so clean.Someone---(could/must)clean it just now.

The classroon is so clean.Someone---(could/must)clean it just now. let's (clean)the claSSroon Who cleans the classroon every day?Tom ()A、does B、is C、did D、cleans my tennis racket is in the classroon.对划线部分提问 There is nobody else in the classroon .(改为同义句)改成There are ____ ____ ____ in the classroom. There is a bookshlf______ the corner of the classroon.A at B on C of D in so deep is the so is the sadness The lion is so so is the The word is so 小学四年级英语选择题（ ）1、The windows ______ green. A . am B. is C. are( ) 2. This is ______ classroon. A .my B.me C. I( ) 3.______ the floor,please. A. ______(turn) off the light before leave the classroon.空里填什么,解释 The fright time is so so as is the huaband ,so is the The ant is so small. The world is so small, The lion is so strong.