10.He had ……………...no effort to finish the work so the boss did not agree to offer him a promotion. (done, made, determined, earned) 11. To communicate fluently in English, we have to spend a lot of time practicing. It is a ……….work. (time-consuming, time-bargain: thương lượng , time-saving, time-limit) 12. Their parents seemed satisfied ……………their progress. (with, to, in, at)