“HURRY UP! WE’RE WAITING FOR YOU. WHAT’S TAKING YOU SO LONG

21. - TRAC NGHIEM PHAN THI TRONG TIENG ANH TONG HOP WITH KEYS TRAC NGHIEM TENSES TONG HOP
TRAC NGHIEM PHAN THI TRONG TIENG ANH TONG HOP WITH KEYS TRAC NGHIEM TENSES TONG HOP
21. “Hurry up! We’re waiting for you. What’s taking you so long?” “I __________ for an important phone call. Go ahead and leave without me.” A. Wait B. will wait C. am waiting D. have waited