HOW LUCKY! YOU CALLED ME, BECAUSE I TRIED TO CALL YOU A FEW MINUTES AG...

Câu 30: How lucky! You called me, because I tried to call you a few minutes ago and got a busy signal. A. You luckily called me, so I didn’t have to call you for a few minutes because the signal was busy. B. Luckily, you called me in time, for I failed to call you a few minutes ago. C. The busy signal prevented me from calling you a few minutes ago, so please call me back. D. I was not lucky enough to call you a few minutes ago because I was busy.