Each of the students working hard at their lessons ________ the book—- So have I

― How do you feel when you watch thenational flag go up― It makes me ________ very proud.

Don’t _______ while I’m talking. You can say what you want later.

We began to open to the outside world in the late 1970s.,there have been great changes in the country.

He worked so hard that________he made himself ill[ ]