. CHOOSE THE WORD OR PHRASE THAT BEST FITS THE SENTENCE

11) - KIEM TRA 1TIET 12NC SO 2
KIEM TRA 1TIET 12NC SO 2
11). Choose the word or phrase that best fits the sentence:" Phone me before ten; . . . . I'll be too busy to talk to you."A). unless B). whether C). otherwise D). if