If it ________ for the heavy rain then, we would have arrived here ahead of time.
45. When I met him the other day, it was the first time we _____ each other since we were at school.
46. --- When shall we go camping again? --- You _______ the day. Any day is OK with me.
47. Three hundred firemen raced to the hotel after a smoke detector ______ the alarm soon after midnight.
48. Don’t respond to any emails _______ personal information, no matter how official they look.
49. I looked at it and found that including the wine, the bill ______ $70.