Choose the word (or words) that fit/s most naturally in the gap.We watched the Red Arrows yesterday evening; they were ... ... impressive.(* The Red Arrows are the aerobatic display team of the Royal Air Force. Does your country have a national organisation like this?)

Intensifiers are adverbs or adverbial phrases that strengthen the meaning of other expressions and show emphasis. Words that we commonly use as intensifiers include absolutely, completely, extremely, highly, rather, really, so, too, totally, utterly, very and at all.