The pressure _______ causes Americans to be energetic, but it also

The pressure _______ causes Americans to be energetic, but it also puts them under a constant emotional strain.
a、to compete
b、 competing
c、 to be competed
d、 haveing competed
the pressure to do something
为什么选A 请翻译一下整句谢谢

翻译：To tame the inflation pressure, With the pressure of work_____,the young man The girl is __ to __ herself. the pressure of possible involvement is lifted 是什么意思 His expectation adds to the pressure on my shoulder. __ early at the station __ sure __ a ticket. （改错）The amount of pressure which the materials are subject to affect the quality of the product Every one likes the music,__ __?填反意疑问句 __ is __ the students to find out the meaning and the usage of new words. Can you tell me the __ to the hospital? Ok, go straight __ and turn right at the __ corner.