— Is it my age ______the boss minds?—I’m afraid so. He will consider ______ necessary to have an experienced assistant.

 He told me it was the reason _______ he explained just now _______ made him come late yesterday.

—How long is it ______ you picked up your badminton training?—It was not until my finance became better last December _____ I started the training.

 It is only ______ you understand what your parents do to you ______ you can improve your relationship with your parents.

It isn't just big data specialists like data scientists and statisticians ______ to benefit from this boom of big data opportunities.