小题1:He didn’t go to bed _________(直到)his father came back.

小题2: When talking about our plan, most of my classmates were       (反对)my idea.

小题3:Great       (进步)has been made in the field of medicine.

小题4: Wang Tao is        (攒)money to buy a new bike.

小题5:He can always find many       (借口)when he is late for school.

小题6:He thinks that the city is too     (拥挤的)to live in.

小题7: You will       (意识到)the mistake you made today in future.

小题8: A person      (精通)a foreign language by using it.

小题9:        (没有一个)of the two books on the desk is interesting.

小题10: He likes watching movies,     (尤其)movies made in America.

混凝土浇筑时下落高度过大时，可采用（）等设备下落。必要时，可在管上安装（）以利于通过振动使混凝土下落。