Tourists should keep in mind that they are representing their motherland while abroad, so they need be _______ about their behaviour.

Not until the press reported the pollution _________why the water supply had been cut off.

He gets up early and reads English aloud, ___ he has greatly improved his English

rents are just too protective They want to ______ their kids from every kindof danger, real or imagined

Of all the students in my class, Macy lives ________from school.