1)The students of Class 1 got together to ______the classroom.

问题描述:

1)The students of Class 1 got together to ______the classroom.
A.clean B.clean up C.cleaning D.cleaned
2)Yon should get your homework ______(do) at once.

(1)B.
to不定式表目的+动词原型do
clean up 有“清扫;洗涤;扫除;清洗”的意思,(1)我认为A和B意思差不多,不过clean up可能用于多数人一起做.
(2)done.
should get sth done 应该做某事(表示本应该做某事,而实际上并没有去做)