Itmatters not __________________, but when you once try to think of a thing,

____ met, it won't be easily forgotten. A: If only B: When if C: Once D: Once you were

Our children do enjoy hanging out with us ______, especially when we treat them with respect and love. A: once and for all B: once in a while C: once and forever D: once upon a time

________, you must continue. A: Once you begin B: When you begin C: Once you will begin D: While you begin

What are negotiators supposed to do when the other side doesn't accept the offer? A: Making no concession at once B: making concession at once

Who once observed that 'when two Englishmen meet, their first talk is of the weather'?

When he was a solider abroad, Edward would always contact his family through telephone calls, but usually ________________. A: only about once a month B: only about once a year C: only about once a week D: only about once a day

Fill in the blanks with the expressions given below. Change the form where necessary. Each expression can be used only once.5.When the match was over, the football fans 5)_____the barriers and rushed onto the football field.

Karl Marx once said “When people are learning a foreign language，they should not ______everything into their own language.

____ you make a promise, you have to keep it. A: If B: Once C: Even if D: when