作业帮The classroon is so clean.Someone---(could/must)clean it just now.
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The classroon is so clean.Someone---(could/must)clean it just now.
The classroon is so clean.Someone---(could/must)clean it just now.
The classroon is so clean.Someone---(could/must)clean it just now.
must
must （could可以，能够；must一定，必须，应当）
must
must have cleaned ....对过去行为的肯定推测。
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.