国民生产总值是衡量一国经济实力的重要指标，而我国的国民生产总值都是以多少亿元人民币来计算的，既然这样，为什么不大量印制人民币来增加我国的国民生产总值呢？（ ）。
国民生产总值是衡量一国经济实力的重要指标，而我国的国民生产总值都是以多少亿元人民币来计算的，既然这样，为什么不大量印制人民币来增加我国的国民生产总值呢？（ ）。
根据
I was late for the interview because the bus _____ on the way to London.
I was late for the interview because the bus \_\_\_\__ on the way to London.
According to the timetable, the train for Beijing _____ at 9:10 p.m. from Monday to Friday.
According to the timetable, the train for Beijing \_\_\_\__ at 9:10 p.m. from Monday to Friday.
The new drug will not be put on the market _____ it has proved safe on humans.
The new drug will not be put on the market \_\_\_\__ it has proved safe on humans.
Students are expected to pay the loan back _____ they are earning enough.
Students are expected to pay the loan back \_\_\_\__ they are earning enough.
It was because of his good performance at the interview _____ he got the job with the big company.
It was because of his good performance at the interview \_\_\_\__ he got the job with the big company.
Only when we hurried to the airport _____ the flight was cancelled.
Only when we hurried to the airport \_\_\_\__ the flight was cancelled.