It’s very kind ____ you ____ help me complete the difficult job. — You’re welcome.

John plays basketball well，________ his favorite is badminton

I think____________ necessary _____________ to take more exercise.

Mike and I planned to meet at 8:00 at the school gate, but he didn’t _______ until 8:30.

We may find that learning a foreign language does not have to be________learning our mother tongue，but can in fact be twice ________