I admire my English teacher. I can remember very few occasions ________ she stopped working because of ill health.

I know MrBrown; we ______ to each other at an international conference

n ministers of the two countries hold regular meetings, ______ they can exchange views on international issues of both concern.

Do you have any plans for your summer vacation–I’m_____ for Paris next week.

Tom as well as two of his classmates _____invited to the party.