Make sure _all the decorations ready before decorating our room. A.gettingB.to getC.getsD.got

B
确保做某事
或从句make sure that all the ...is...

选 B：to get. 短语make sure to get的意思是“确保/确定做某事”
句子意思：在装修房间之前要确保准备好所有的装修材料。

B

make sure to do sth
确保作某事
翻译过来就是
装修我们的房间之前确保所有的装饰品都准备好~

B 在装饰我们的房间之前确定所有装饰品都准备好了。
make sure to do是固定短语

B
make sure to do/that/of doing

get 命令语气