It is ________ for us ________ learn English ________．
翻译：
你确信交换生下个月会到我们学校来吗?
－What ________ Millie ________(do)at the moment?
－She ________(help)her mother do some cleaning．
－________ her father ________(do)the cleaning?
－No, he ________(not do)the cleaning．He ________(cook)in the kitchen．
Today some students spend too much time playing computer games in the computer room．They even don't finish their homework．So the computer room is not a good place for some students ________(go)．
What a nice bag!But she ________ only thirty dollars for it．
[ ]
A．
cost
B．
took
C．
spent
D．
paid
－Are you still ________ your lost dog?
－Yes, I spent one afternoon ________ it, but I still can't ________ it．
