per studies some _______cases in which something somehow wrong leads to the miscommunication, so thatEnglish teachers may improve their teaching

How often does the boy go to see his granny— .

Are you satisfied with what she has done? —Not a little. It can’t be ________.

Sam did very well in the English exam. He made _______ mistakes.

It’s generous _______ her to donate so much money to UNICEF. Now she thinks it’s important _______her to help children in need.