Those who’d like to visit the exhibition ________ (sign) your names here.
sign
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Ipreferthisdiagram________thatone.
________(fail)severaltimes,theyneedsomeencouragement.
Abeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice
Night________(fall),wehurriedhome.
He________methathedecidedtoleaveonMonday.