Choose the appropriate form of the verb: customs officers (watch / are watching) everywhere. they (watch / are watching) you from the moment you (walk / are walking) off the plane, while you (stand / are standing) in baggage reclaim (waited / waiting) for your bag, and especially when you (come / coming) out the other side of customs, which is when people who (try / are trying) to smuggle something finally let their guard down and (get caught / getting caught). the large two-way mirror in customs, behind which customs officers (are sitting / sit) and (are watching / watch), is part of that process. as you (are walking / walk) past, it (is making / makes) you (to look / look) taller and thinner. so you (are feeling / feel) good about yourself and you (relaxing / relax) and (smiling / smile). that’s when a customs officer suddenly (appearing / appears) and (is asking / asks) you to open your case…  are the sentences t (true) or f (false)? customs officers can see through the mirror in customs. passengers are often caught by customs officers because of their body language.  answer the questions: why is there usually a big mirror when you are going through customs? have you ever been stopped in customs? were you carrying anything that you shouldn’t have?