---The English exam is not difficult, is it? ---_____, even Tom _____ to the top students failed in it.
51. After everyone took_______ place, the meeting began.
52. -Why don’t we take a little break? -Didn’t we just have _______?
53. If you want to change for a double room you’ll have to pay ___$15.
54. We should always keep ______ well-informed of the changing information.
55. Give the message to ______ is at the table.