_____ these experiments were successfully completed would we think of going into humans

It’s too bad that I failed in the math exam. If only I ______ hard at it!

This bike looks very nice. It only 150 yuan.

ronger the ______ is, the more quicklya person will learn a foreign language That is to say, it is up to whether hehas an interest in the foreign language

It’s high time that we ___our work and_____ supper now