The old lady’s hand shook frequently. She explained to her doctor _______this shaking had began half a year before, and ______, only because of this, she had to give up her job.

As far as we see, ______ is no possibility ______ he will win the tennis match this time.

My parents have lived in the town _________ their son was six years old.

下列各句中，表达得体的一句是

The number of English learners ________ increased.