Use the phrasal verbs below in the correct form to replace the words and phrases in brackets in the following sentences. The first one has been done for you. catch on (2) catch out catch up with check in (2) check out (2) check up on clear up (2) clear off closedown 1 I have to go to the factory to check up on (make sure that everything is all right with) the work being done there. 2 You only have to explain it once for Alan to _____ (understand). 3 When you _____ (present your tickets) at the airport you must have your passport with you. 4 Why don’t you just _____ (go away) and leave me in peace. 5 Roller blading has _____ (become fashionable) recently. 6 If the weather _____ (improves), we’ll go out this afternoon. 7 The hotel receptionist will give you the room key after you have _____ (registered). 8 Since he has missed so much school he’ll have to work hard to _____ (reach the same level as) the rest of the class. 9 Let’s go and _____ (have a look at) the new amusement arcade, shall we? 10 They have _____ (stopped using) the old cinema because the new one has opened. 11 You’ll get your passport back from reception when you _____ (leave). 12 He said he didn’t have any money but he was _____ (proved a liar) when he accepted our invitation to go to the casino. 13 You can’t go out to play until you have _____ (tidied) the mess in your bedroom.