There is no doubt______ one day the medicine for AIDS will be made.

If Li Lei __________ tomorrow, I’ll call him.[ ]

I didn’t manage to do it _____ you had explained how.

What do you think about Chinese Post-90s generation ?–They are ­­­­­­­­­­­­_________ from those born before them. They are very aggressive and pretty confident because they never felt hardship.

A human brain can do many things, such as creating new ideas, ________ than a computer.