英语 词汇与语法 相关的5题,求救...

英语 词汇与语法 相关的5题,求救...
11. It was not until 5 o’clock in the afternoon ________ the meeting was over.
a. before b. after
c. that d. since
12. The wave is ________.
a. 50 meter high b. 50 meters high
c. as 50 meter high d. as 50 meters high
13. I saw him ________ this building.
a. entered b. enters
c. enter d. was entering
14. ________, you would still face the ordinary life.
a. Even if you are the president b. Even if you were the president
c. Not until you are the president d. Not until you were the president
15. The factory keeps ________.
a. releasing poisonous gasx05 b. to release poisonous gas
c. giving poisonous gas d. to give poisonous gas
16. There is no room left ________ you would like to sleep on the floor.
a. if b. while
c. unless d. as
17. He speaks ________.
a. so loudly as to everyone can hear him
b. so loudly that everyone can hear him
c. too loudly that everyone can hear him
d. too loudly so that everyone can hear him