______ do you write to your pen-friend? —”Once a week.” [ ]

Nobody teaches______ English. I learn it all by______.

I don’t like the green coat.—____ the red one?[ ]

These Maths problems are too hard to ______. Can you help me?—There are many ways, but the most important is to try your best.

_________ very important for her to work hard in all her subjects.