39.To work in such a place you have to be ______ to these things.

11.It was at eleven o’clock _____ they went out of the cinema.

13.John _______ me he was going to help me with my English.

18.We walked ________ into the forest and lost our way ; we _______regretted it.

43.I took ______ trouble over this job.

36.We unanimously elected him ______ chairman.

41.I have no alternative ______ to arrive late.

32.Just ______ he caught the ball, there was a tearing sound.

50.Journalists have to be very independently, and they need many different skill. 

35.The moon moves ______ the earth.

48.The 42% of Americans who have at least one step-relative typically feel a stronger sense of obligation to their biological parent, child or sibling than to their step-relatives.

16.现代学制最早出现在欧洲，于19世纪末初步形成，下列属于单轨学制的国家是（ ）。