I think it’s necessary to learn about how to work in groups.—I quite agree. Sometimes it’s even__________ than grades.

At present, you do meet with some difficulty in English learning, but you will have a good knowledge of it.

It does not matter that you are a slow walker _____ you never walk backwards

What hot weather! Would you mind opening the windows—________

As nobody here knows what is wrong with the machine，we must send for an engineer to______the problem.