_____________ you have finished using the hair dryer. Another guest would like to use it.
A:We wonder if;
B:We want to know do;
C:When;
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We _________________ cleaning, and the entire washing process is automated. Please check the other items.
A:are good at;
B:specialize in;
C:do well in;
It will _______ ten minutes to send it to your room.
A:cost;
B:spend;
C:take;
A repairman will _________ to your room after ten minutes.
A:send;
B:be sent;
C:be sending;
劳动力商品的价值是由维持劳动者生存和发展所必需的( )的价值决定的。
A. 生活奢侈品
B. 生活必需品
C. 生产成本
D. 生产资料