the sitting-room needs( ),but it'll have to wait until saturdayA be cleaningB be cleanedC cleanD cleaning说明下原因啊、、、
问题描述：
the sitting-room needs( ),but it'll have to wait until saturday
A be cleaning
B be cleaned
C clean
D cleaning
说明下原因啊、、、
答
D cleaning
need 或want +doing ,是用主动形式表示被动 = need to be cleaned
而need to do 表示主动意思